Ten aryl chloroacetates were synthesized by liquid - liquid phase transfer catalysis.摘要利用液 - 液相轉(zhuǎn)移催化法合成了10種氯乙酸芳酯.Aryl disulfides, for example, inhibit polyolefin oxidation.例如芳基二硫化物可抑制聚烯烴的氧化.The most effective syhthetic co...
Aryl disulfides, for example, inhibit polyolefin oxidation.例如芳基二硫化物可抑制聚烯烴的氧化.The most effective syhthetic condition for aryl chloroacetates was obtained experimentlly.討論了不同反應(yīng)條件對產(chǎn)率的影響,通過正交實(shí)驗(yàn),探索出了最佳合成條件.Ten aryl chloroacet...
A blade guard is fitted to protect the operator.為保證操作人員的人身安全安裝了槳葉保護(hù)罩。A sharp blade is likely to nick the skin and draw blood.鋒利的刀刃可能會(huì)劃傷皮膚，導(dǎo)致出血。The soil sticks to the blade and blocks the plough.土粘在犁鏵上，卡住了犁。...
Read these notes carefully and keep them for future reference.仔細(xì)閱讀這些注釋并將其保留下來以備將來之用。They exchange traveller's cheques at a different rate from notes.他們兌換旅行支票時(shí)依據(jù)的匯率跟兌換現(xiàn)鈔時(shí)不同。Watson has a wonderful voice, with thrillin...
俄別以東和耶希亞也是約柜前守門的.Obed - Edom and Jehiah were also to be doorkeepers for the ark.于是將以色列神的約柜運(yùn)到那里去.And they carried the ark of the God of Israel about thither.他們就把神的約柜送到以革倫.So they sent the ark of God to Ekron....
戰(zhàn)爭顛倒是非：殺戮與殘忍成了美德。War turns morality inside out: killing and cruelty are virtues.甘地體現(xiàn)了克己、禁欲和自我約束的美德。Gandhi exemplified the virtues of renunciation, asceticism and restraint.謙虛被認(rèn)為是一種美德。Humility is considered a virtue....
The effect of nitrogen can be overcome by sheathing the flame in argon.氮的影響則可以通過用氬氣包覆火焰而予以克服.Used for testing horizontal combustibility of various textile and show with flame spread rate.用于測定各類紡織織物水平方向燃燒性能,并以火焰蔓延速率來表示.Th...