nautical cartography

cubic feet (OLAP) = 28.317 m³ (m3) 1 cubic foot (FT3) = 0.0283 m³ (m3) = 28.317 litre (liter) 1 m³ (m3) = 1000 litre (liter) = 35.315 cubic feet (FT3) = 6.29 barrels (BBL) Duration Calculation 1 km (Km) = 0.621 miles (mile) 1 m (m) = 3.281 feet (FT) = 1.094 yards (YD) 1 cm (CM) = 0.394 inch (in) 1 inch (in) = 2.54 cm (cm) 1 nautical mile (N mile) = 1.852 km (Km) 1 searches (FM) = 1.829 (m) 1 yard (YD) = 3 feet (FT) 1 pole (RAD) = 16.5 feet (FT) 1 mil

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Finance itself is a kind of legal arrangement, financial innate and the law is inseparable, from the European medieval Saxon rules to the nautical century can not be separated from the financial, finance itself is the financing, is entrusted with the entrusted relationship; The natural existence of the factors of default and fraud.Domestic mutual gold a bit messy actually don't fuss, mutual gold than the tulip case and securities, trusts in the domest

Keyword of linear measurement unit: Centimeter | decimal | meters | feet | inches | km | meters | Miles | millimeters | nautical miles | lbs | unknown | code In the tool dialog box, you can enter the expression directly into the expression parameter, or use the "field calculator" to build the expression in interactive mode. This tool updates only selected records when you use the selected feature set (for example, the feat

Lamps are lighting signal communication. Lamps are specialized lamps for lighting communication. The communication distance is 3-4 nautical miles. lamps are the most widely used, during use, use a hand to control the Opening and Closing Time of the light leaves to show whether or not the light is shining and the length. Use the Morse symbol (special communication symbol) to represent letters, numbers, and service symbols. It cannot be regarded as inte

Roll)Bank, rollY axis The positive direction of the Z axis is the clockwise direction of the start point. The positive direction to the left is negative to the right, and the negative direction is 0. The valid range is-180 degrees ~ 180 degrees Note:It is obtained from the tail of an airplane --> from the head. Pitch angle (EL)Pitch, elevationRound X axis The Negative Z axis is the clockwise direction of the starting point. The vertical direction is 0 degrees, the horizontal direction is 9

: http://wesbos.com/simple-php-page-caching-technique/ 2. calculate distance in PHP This is A very useful distance calculation function. it uses latitude and longitude to calculate the distance from location A to location B. This function returns the distance of three units in miles, kilometers, and nautical miles. The code is as follows: Function distance ($ lat1, $ lon1, $ lat2, $ lon2, $ unit ){ $ Theta = $ lon1-$ lon2; $ Dist = sin (deg 2rad ($

From the ancient Babylonian clay map to today's electronic map, from the Columbus Nautical chart to the modern satellite navigation, the history of the map condenses human curiosity and wisdom, and is also mixed with blood and lust. The history of the map is thick enough, because the map is associated with political, military, and economic ups and downs, and the history of the map is good enough because the map is developed to meet the needs and to ac

aim is to enhance or weaken the visual identity, thereby enhancing or weakening the perception of our visual system.So this principle is mainly used in the fields of detection, feedback and so on:A) spectrometer, micro-level observations. (when observing microscopic structures such as cells.) by staining, or by adding radiation substances, etc.);B) photosensitive glass; fluorescent anti-counterfeiting. Color-changing glasses. Nautical life jackets;C)

log words. The WEB, referring to the world Wide Web;log, is the "nautical log", which refers to any type of water record. Weblog is a form of running records on a network. Blogger or weblogger refers to the person who is accustomed to daily records and uses weblog tools.20. What is RSS what it is: an easy way for sites to share content with other sites (also called aggregated content). RSS uses XML as a standard way to share content with each other.

will become very mysterious. All in all, you can set up a simple and profound sea view, which can be a representative marine creature or a person who is in close contact with water, then, you can add some nautical themes to add color to the screen. Seaview is also widely used. for example, wedding dresses can be kissed by two newcomers on the bottom of the ocean. the pictures are extremely beautiful and attractive. SNS can also be used. the drop-dow

maintain the equal area characteristics when processing national data showing 4 million or 1 million.4) Mercator Mercator projection (positive axis conformal cylindrical projection)– Designed specifically for nautical purposes by Mercator in 1569.– The design idea is to make a cylinder that is aligned with the axis of the Earth cut or cut on the globe, projecting the graticule on the sphere onto the cylindrical surface in an isometric condition, and

incidentally measured speed of light, for the later scientific development laid a solid foundation.Aside from history, precision clocks alone have become so fascinating. Although I also have a mechanical watch, it is difficult to imagine a precision timer or a nautical clock that is so complicated and has such a thick history of pumpkins. As an important inventor of the precision Chronometer, John Harrison spent his life just h1-h4 4 prototypes, and

of equal expansion in all directions, it maintains the correct direction and the relationship between the positions. Mercator projection maps are commonly used as nautical charts and aerial maps, if the direction of the two points on the Mercator projection map is not changed, it can always reach the destination, so it has favorable conditions for the ship to locate and determine the course in the voyage, which brings great convenience to the seafari

Yesterday, three children playing downstairs in the beautiful Jiayu community of biyun road were involved in a Kia SUV, and an eight-year-old boy was killed after being crushed by wheels. After the accident, the driver said that he did not expect a child to play in front of the car. The child's family shouted but could not hear the child laugh again. The child playing in front of the car is rolled down by the wheel At around 06:10 last night, a silver-gray Kia smart run SUV with the Yu a900tt

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#pragma mark-calculatedistance calculate distance #define based on 2 latitude and longitude pi3.1415926+ (Double) lantitudelongitudedist: (Double) Lon1other_lat: (Double) Lat1self_lon: (Double) Lon2self_lat: (double) lat2{doubleer =6378137;//6378700.0f;//ave.radius= 6371.315 (someonesaidmoreaccurateis6366.707) //equatorialradius=6378.388//nautical mile=1.15078doubleradlat1=pi*lat1/180.0f; doubleradlat2=PI*lat2/180.0f; //nowlong.doubleradlong1=pi*lon

ScrapyScrapy is a lightweight web crawler written in Python that is very handy to use. Scrapy uses the Twisted asynchronous network library to handle network traffic. The overall structure is broadly as follows:Create a Scrapy ProjectThe S-57 format is an electronic nautical chart standard promulgated by the International Maritime Organization (IMO) and is itself a vector chart. These standards are published on the http://www.s-57.com/. Take the page

Rss|rss What is a blog? What is RSS? News aggregation Tool Arron posted on 2004-6-7 1:08:13 What is a blog? -Blog, is the abbreviation of weblog. -Weblog, is the combination of web and log words. Web, refers to the world Wide Web;log, the original meaning is "nautical log", after referring to any type of water record. Weblog is a kind of flow record form on the network. -Blogger or Weblogger, refers to people who are accustomed to daily records and u

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