High light efficency , concentrated light, no additional ballast, which can take place of incandesce lamp, reducing investment fees.特点:发光效率高,光线集中, 不需要附加镇流器, 可直接与白炽灯互换使用, 减少投资费用....
Cyclization occurs readily with dilute alkali.遇到稀碱就容易环化.Menthol was obtained from lemon eucalyptus oil via cyclization and catalytic hydrogenation.以柠檬桉叶油为主要原料经环化、催化氢化二步反应得到薄荷醇.METHODS Cilnidipine was synthesized from cin...
In Chapter 3, I shall describe some of the documentation that I gathered.在第三章，我会介绍我收集到的一些文献记录。Britain's trade figures can no longer be extracted from export-and-import documentation at ports.英国的贸易数据现在不能再从各港口的进出口单证中提...