计算分子量(免费)
【用户输入】 a chemical molecular formula
Input is case sensitive: Co=Cobalt, CO=carbonmonoxide

化学反应动力学模拟JavaScript Kinetics Simulator(免费)
【用途】 With this web page you can simulate the kinetics of reaction mechanisms. The idea is to

write a mechanism and from that

follow the course of concentrations or rates of change in concentration of reactants, catalysts, intermediates, and products over time. In addition,

graph many different relationships related to the reaction either for one species or for the whole set, including:
[X], ln[X], 1/[X], or d[X]/dt vs. time, and
d[X]/dt vs. time, [X], or [X]^2

在线免费度衡量换算转换器
在线免费度衡量换算转换器

单位换算在线工具(WWW unit converter) (免费)
【简介】
A site of Digital Dutch
Area，Bits & Bytes，Density，Energy，Force，Length，Mass，Power，Pressure，Speed，Temperature，Volume

VRML 2.0显示程序Cosmo Player (免费)
【用途】 Cosmo Player is a VRML viewer for web-based 3D interactives.