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每日欣賞一張天文圖，發現宇宙間的天文奇觀。每日一天文圖的內容來自於NASA維護的網站 Astronomy Picture of the Day (APOD)，其中文說明由成大天文實驗室翻譯。

Browse over 1,400 formulas, figures, and examples to help you with math, physics, chemistry and more. Use an expanding list of helpful tools such as a

单词锁屏，2013年最具创意的背单词应用！- 荣誉 * 凤凰科技、中关村在线、长江商报特别报道 * 360手机助手、豌豆荚、应用宝特别推荐 * 科技媒体「最美应用」，新锐资讯平台 ZAKER ，科技媒体「爱范·AppSolution」重点推介- 简介 「单词锁屏」是一款新颖、实用的背单词软件

Exclusively on Android, so make your iPhone friends jealous! If you're not satisfied, for any reason, within 30 days you get a full refund, period,

Brainwell is a brain trainer just for you, with 50+ scientifically designed mind games and personalized training based on cutting-edge neuroscience re

This app is the Pro-Version of "Electrical Engineering", completely without advertisements.This app consists of 3 useful electrical tools, an Electric

Having trouble with algebra?Equations, inequalities and graphs leave you frustrated? Tried to solve the problem but you're not sure you got it right?

C4droid is a user-friendly (but powerful) C/C++ IDE + C/C++ compiler for Android. Basic features: - Offline compiler: create your own applications o

Learn How to Draw is the best mobile collection of tutorials designed to help people improve their drawing skills. The lessons focus not just on the f

Smart curriculum is designed for students curriculum management software, which offers fine simple interface , user-friendly design , to help you reco

This app is a simple way to convert text to braille notation and vice versa.Braille is a tactile writing system used by people who are blind or visual

英汉词典是一款界面清新简洁的离线英汉词典工具，词典当前共收录了超过18万个英文单词，并提供快速检索功能，轻松查词。的每个单词都有标准音标、详细注解、词形变化以及例句用法等。提供了生词本的功能，可以将任意单词加入生词本，方便您学习。完全离线运行，无需联网，是您出国旅行，学习英语必备的工具。

While you enter data, the app will calculate statistics and draw graphs corresponding to the data entered.Available graphs: - Bar chart - Histogram

Graphing Calculator Application designed for Comprehensive Mathematics & Statistics on your Phone or Tablet. - MathPac+ offers Precision, Accuracy a

"Material Design Tutorials" application is packed with full detailed tutorials and interacting outputs to make you understand every aspect of google's

NOTE: If you have already had the app, this update 3.3 may break your application. You will need to uninstall and reinstall the app for it to start wo

QuickTeX is an extremely simple utility that allows you to quickly write and send LaTeX equations to friends or colleagues. It works by exporting your

App provides several search methods to track satellites in real time. You can search from a database of over 15,000 tracked space objects, including t

The Merck periodic table of the elements app provides detailed information, state-of-the-art functions and an appealing presentation. It offers high-s

Generally, differential equations calculator provides detailed solutionOnline differential equations calculator allows you to solve:Including detaile