Minerals & Rocks 对比 U.S Navy Ships: A History 的使用情况和统计数据

"Minerals & rocks" application describes various minerals, their properties and their formation. This app categorizes and sketches the difference between minerals and rocks, by taking a few examples to describe their formation. This app is educational and can be used as a reference to know important properties such as a mineral’s Hardness, Cleavage, Fracture, Crystal form, and Fluorescence. This app also has an option to pause and play the audio. There is also a quiz section with a set of questions, to review your knowledge on rocks.

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U.S Navy Ships: A History

The compete history of all US Naval Ships is included in this comprehensive program. This app contains photographs of every United States Naval Aircraft Carrier, Battleship, Cruiser, Destroyer and Submarine. Nearly 10,000 ship histories are included in this massive project. A detailed history of every ship is also included– (mostly from the official US Naval history, with supplementary sources to incorporate entries on each of the modern ships). All of the photographs in our app are high quality. Using the iOS function each photo can be zoomed in to view exquisite detail. They look absolutely gorgeous on the retina displays. We will update this app once a quarter with additional photos. Each quarter the app will contain a "new photos of the quarter section." All of the photographs and history entries in our US NAVY SHIPS can be e-mailed, added to your photo library and/or printed.