Phenanthrophenazine

二苯吩嗪

??? 情景例句

What do people usually do on that day?
在這一天,人們通常干什么?
Tell us about your post-purchase servicing.
告訴我們有關(guān)你們售后服務(wù)的情況。
Instruments have been devised and can be so placed that all three elements can be recorded in different graphs.
已經(jīng)設(shè)計(jì)出了一些儀器,它按照一定的安放方式就可測繪出這三種運(yùn)動(dòng)的曲線圖。
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