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Library. This is a loose design with almost no coupling architecture. you can easily mix it with other frameworks.2. Symfony Symfony is a PHP 5-based framework that provides an architecture, component, and tool set that allows you to create your applications more quickly. Some tutorials are provided on its official website.3. CodeIgniter The CodeIgniter framework has a wiki that allows you to easily search for relevant documents. PHP4 is supported.4. CakePHP This framework uses some popular des

system, there are also the maturity of technology, ecology, and application flexibility. In addition, with the development of battery technology and the introduction of green energy such as wind energy, solar energy, and fuel cells in the data center, more opportunities and challenges will be brought to the data center. In a sense, the uninterrupted power supply technology of the data center will ultimately depend on the development of the battery t

parents of the age increase, there may be a hearing decline, so we will use a relatively large radio, convenient for parents to use.6, outside the box, first, we use metal outer frame, resistance to fall, and secondly, the outer frame Four Corners for the arc and the shell for the micro-arc, so more fit hand type, put in the pocket will not be slightly.7, screen size, pre-estimated screen size of 4.5 inches, suitable for watching video, play games, and not too big, easy to carry.8, mobile phone

A black hole is a super-high-density celestial body whose gravitational force is strong enough to hold light and not light to reflect, hence the name "black hole".Most of the black holes that are present are caused by the collapse of the stars due to their gravitational pull. At the beginning of the star, the hydrogen element in its interior obtains a lot of energy at high temperature and pressure, and in the high-speed movement, it collides with fusion to form helium, which produces energy, whi

explore new energy, such as solar energy, electricity , wind energy, these most essential energies must have the new technology to emerge, will harness.Under such a background, electric vehicles will become the demand of the times, after all, the non-renewable resources of oil, while satisfying the human desire, is becoming scarce and evil, the world's energy crisis is emerging, and derived from the environmental problems, it also makes people headac

worse.Five, It is universally acknowledged that + sentence ~ ~ (the whole world knows ...) ）Example: It was universally acknowledged that trees was indispensable to us.The world knows that trees are indispensable to us.Six, there is no doubt that + sentence ~ ~ (no doubt ...) ）Example: There is no doubt, educational system leaves something to be desired.There is no doubt that our educational system is unsatisfactory.Vii. an advantage of ~ ~ ~ is the that + sentence (...) The advantage is ... ）E

54.9 crystallography (crystallography) 55. Astronomy 55.1 Astronomical Surveying and time and calendar 55.2-Day physical mechanics (theoretical astronomy) 55.3 Astrophysics 55.38 Astrophysical Chemistry [55.39] Celestial Biology 55.4 stars 55.5 Solar System 55.6 galaxy, galaxies, cosmology 55.7 Radio Astronomy (radio astronom

GeomagneticThere is electricity in our land, called Ground electricity .The reason for the north of the magnetic needle has not been found. The direction of the needle is changing daily, yearly, and every century.The magnetic needle often swings around its axis every day, 8 o'clock East, 13 o'clock West.The amplitude of the Sunday and the frequency of geomagnetic disturbances vary every year, and are closely linked to the activities of the sun.?Tidal tidesThe reason for the tides is that the gra

International Date LineFrom east to west through the day line, plus one dayFrom west to east through the day line, minus one day.This is due to the difference in the solar time around.Civil Day and Stellar dayCivil Day (Sun Day): The sun goes through the head twice in two successive times.Stellar Day : The rotation period of the Earth.The sun is longer than the star day. There are 365 and 1/4 solar days in

Confucius at that time recorded the Shuori, as if always pushed past the first 2nd arrived. And the hour is also less two hour.And when the year before 650 BC, less than three hour.(2) About Ganzhi, in principle there will be no mistake, because whether it is the ancients or the present people, count how many times the sun risesAnd fall, I believe there is absolutely no mistake. But this Ganzhi day often does not fall in the Confucius Record solar ec

latitude of about 23°5 ' range of reciprocating movement, which formed the so Tropic of Cancer, direct Sun Point, moving between the Tropic of Cancer in the south. During the year, the direct Sun Point reaches south, the Tropic of Cancer once, and passes the equator two times.For the Northern hemisphere, the date of the solar direct point at the equator is called the vernal Equinox (vernal equinox) and the Autumnal Equinox (Autumnal Equinox), the dat

; energy Internet: Solar power, Goldwind, branch HHS, Rainbow Refinement, Heng Electric, Evergreen Group, Guodian nan Rui ;Photovoltaic: Solar power, rainbow refinement, Jiangsu broad-minded, love Kang technology, special change electrician, solarfun Electronics, Oriental Energy ; Wind Power: Goldwind, Fortune shares, Tian Shun wind, Tai Sheng Wind ; Belt and Road: Special transformer electrician, Guodi

1. Background informationHanio (Hanoi, also known as Hanoi) is a puzzle toy rooted in an ancient Indian legend. When big Brahma created the world, he made three diamond pillars, and stacked the gold discs on a pillar from bottom to top in order of size. The great Brahma commanded the Brahman to rearrange the discs from below to the other pillars in order of size. It is also stipulated that the disc cannot be enlarged on the small disc, and only one disc can be moved between the three pillars at

human attitude towards extraterrestrial life can be broadly divided into three stages:The first stage was in the 70 's NASA and ESA launched the Voyager 1th Deep space probe, this phase is mainly in the external star civilization form of imagination and various (blind) search-oriented. Because there is no understanding and experience can be consulted, human beings for extraterrestrial life form of imagination, a variety of, difficult to do the table;The second stage after the launch of the Voya

are evenly distributed on both sides.In fact, modern research has come to the conclusion that our solar system is at the edge of the inner side of the spiral wing of the galaxy, about 25 thousand light years from the center of the galaxy. As a result, we took back our field of view to the order of 10 thousand light years, focusing on one of several tentacles of the galaxy.1 yearIt's very difficult!100 light yearsClose to the point, it's still dense.1

theory provides a new way of quantitative analysis for ecological research. The definition of value can include the sum of energy formed and invested in products or economic activities. Any product or service can be quantitatively described by value, it can represent any ability to do work as a unified unit of solar power. The energy value can be linked by the energy conversion rate and efficiency, and can be used to measure all the wealth created b

Xinhuanet, Nanjing, July 31 (Xinhua)-CaO Yun, a researcher at the Zijinshan Observatory of the Chinese Emy of sciences, calculated the time when the eclipse was visible in major cities in China. According to Cao, the occurrence of total eclipse mainly includes the following time points: initial loss, when the moon approaches the sun, the first time the moon's surface is split from the sun's surface, that is, the beginning of the eclipse; when the center of the moon is closest to the center of th

Label: strong SP on time bs simple method record nbsp The calculation method of the Lunar New Year, the summer, the autumn, and the winter is recorded here: Laichun accurate time calculation method Formula: [y * D + C]-l Explanation of the formula: the second digit of the number of years is multiplied by 0.2422 plus 3.87, And the integer is used to subtract the number of leap years. 21 Century C = 3.87, 22 century C = 4.15. Example: The calculation procedure for the spring date of January 1

Ii. Create a style The table line displayed in the calendar is implemented by filling the border of the graph with Cell. To ensure uniformity, we first define the color and line of the border line. In addition, you must define a system fill style. Create color: Color_calendar_border Table LineColor_calendar_title_gregorian title bar date and Year text color color_calendar_title_lunar title bar lunar calendar color_calendar_title_startcolor_calendar_title_endcolor_calendar_title_addition title ba

, and tool set that allows you to create your applications more quickly. Some tutorials are provided on its official website.3. CodeIgniter The CodeIgniter framework has a wiki that allows you to easily search for relevant documents. PHP4 is supported.4. CakePHP This framework uses some popular design patterns such as MVC and ORM. CakePHP can effectively reduce development costs and help developers write less code.5. Prado Prado requires PHP5 and later versions to run. This is a program framewo