Pickling chemicals are primarily used in the steel and metal industries for surface treatment and improving the corrosion ...

催化剂，开始的时候指的是“加快反应速率的物质”，但是后来科学进步了，发现减慢反应速率也是一门很深的学问，就把前者叫做正“催化剂”，后者叫做负“催化剂”，通称还是催化剂。例如核反应的时候就需要减慢反应速率，需要负催化剂（重水）。类似地，经济上也不说减慢 ...

A utility package for displaying IUPAC nomenclature and chemical formulae without the hassle of manually formatting all of these in your document.

Global healthcare company Grifols has partnered with BARDA, the Biomedical Advanced Research and Development Authority, to develop the first immune therapy eye drops to prevent the long-term ...

Creative Commons (CC): This is a Creative Commons license. Attribution (BY): Credit must be given to the creator. In the past decade, high-throughput computational studies of materials have increased ...

世界上有118种元素，各种元素的原子之间相互组合能够形成成千上万种性质各异的物质，它们之中有些具有很强的腐蚀性。 腐烂是微生物的繁殖引起的生物现象。腐蚀不同于腐烂，腐蚀是一种化学现象，在日常生活中很常见，当一种固体与另一种物质接触时，能够被该物质化学损伤，则说明该物质具有腐蚀性。