物竞数据库
物竞化学品数据库（http://www.basechem.org）是由上海物竞化工科技有限公司开发并维护的综合性公共化学品数据平台。 这是一款全中文的化学品综合数据库。支持中文、英文、系统名、CAS号、分类关键词等多种查询方式，50000多种化学品的基础信息、物性、表征图谱、安全、毒理、用途、合成方...
達爾文物競天擇適者生存
Charles Darwin
Charles Robert Darwin, FRS ( 12 February 1809 – 19 April 1882) was an English naturalist and geologist, best known for his contributions to evolutiona...
Active Weather Coloring Book for Children: Learn t
Perfect for smaller childrenLearn about the world while playingHave fun drawing-With this fun game for children, you can learn about the world while p...
Activities for iPad
★★★ Price Drop! Only: $ 1,99 ★★★8 games with 120 different activities in one application to entertain the kids for a long time with the iPad!Transform...
Activity Bundle for Kids : Learning Game for Toddl
"Educational App Store" reviewed the app and gave certification of 4 Stars - "A highly engaging and beautiful activity pack app that will keep the lit...
Activity Cars for Kids by Happy-Touch® Free
Endless driving fun for kids with awesome cars and exiting racetracks.Drive about 1.000.000 possible cars on more than 50 different tracks!Download no...
Activity Cars Match it - Puzzle Game for Kids by H
Age recommendation: age 2 and upVrrroooom! A big truck! ... Can you find the other one?With lots of different, lovingly designed sets of cards, this g...
Activity Cars Match it - Puzzle Game for Kids by H
Age recommendation: age 2 and upVrrroooom! A big truck! ... Can you find the other one?With lots of different, lovingly designed sets of cards, this g...
Activity Center: World of Horses
Enjoy hours of fun exploring the world of horses.Featuring information on 120 Horse breeds, plus 120 Jigsaw puzzles and 12 Flipcard sets.免費玩Activity C...
Activity City Puzzle Pack - Kids App by Happy-Touc
Experience the exciting city life, find yourself right in the middle of a fire-fight operation scene, on a beautiful farm or at the airport - there ar...