High light efficency , concentrated light, no additional ballast, which can take place of incandesce lamp, reducing investment fees.特點:發(fā)光效率高,光線集中, 不需要附加鎮(zhèn)流器, 可直接與白熾燈互換使用, 減少投資費用....
In Chapter 3, I shall describe some of the documentation that I gathered.在第三章，我會介紹我收集到的一些文獻記錄。Britain's trade figures can no longer be extracted from export-and-import documentation at ports.英國的貿易數(shù)據(jù)現(xiàn)在不能再從各港口的進出口單證中提...
Cyclization occurs readily with dilute alkali.遇到稀堿就容易環(huán)化.Menthol was obtained from lemon eucalyptus oil via cyclization and catalytic hydrogenation.以檸檬桉葉油為主要原料經(jīng)環(huán)化、催化氫化二步反應得到薄荷醇.METHODS Cilnidipine was synthesized from cin...
With her speed and agility, Cage cut out all her competitors in the hurdle race.凱奇在跨欄賽跑中速度快、動作敏捷, 擊敗了所有其他選手.Two-thirds of candidates fail at this first hurdle and are packed off home...三分之二的候選人在第一個難關就敗下陣來，只好打包回家了。She lea...