英语翻译(by gravimetry)weight accurately about 0.5g,disslove in 100ml of water,and add 1ml of acetic.add,with constant stirring ,25ml of 5% potassium hydrogen phthalate solution,and allow to stand for 2h.Filter though a tared,fine-porosity filter
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英语翻译
(by gravimetry)weight accurately about 0.5g,disslove in 100ml of water,and add 1ml of acetic.add,with constant stirring ,25ml of 5% potassium hydrogen phthalate solution,and allow to stand for 2h.Filter though a tared,fine-porosity filtering crucible,wash with three 5-ml portions of saturated potassium tetraphenylborate sulution,and dry at 105C for 1h.The weight of the potassium tetraphenylborate multiplied by 0.9551 corresponds to the weight of the tetraphenylborate.
(重量)秤0.5克 溶於100ML水中 加1ML乙酸 以及
25毫升的5% 邻苯二甲酸氢钾溶液 持续搅拌
静置2小时 用细孔径滤纸以过滤坩锅过滤
以5ML饱和的四苯硼钾溶液清洗三次
再105度C下乾燥一小时
四苯硼钾的重量乘以0.9551等於四苯硼的重量
英语翻译(by gravimetry)weight accurately about 0.5g,disslove in 100ml of water,and add 1ml of acetic.add,with constant stirring ,25ml of 5% potassium hydrogen phthalate solution,and allow to stand for 2h.Filter though a tared,fine-porosity filter
英语翻译w
英语翻译adian,master,w
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英语翻译hosted by sth .
英语翻译请用“by”
by means of 英语翻译
英语翻译feel betrayed by
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英语翻译by Leuthey
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英语翻译W:But he did.
英语翻译However,that notion is undermined by another study.Conducted by researchers at Yale University,this study examined the reactions of autistic adults while they watched emotionally charged scenes from the movie,Who’s Afraid of Virginia W
英语翻译be attended by sb.
英语翻译:learn by oneself English
英语翻译by 的意思是什么?
英语翻译那个Y是BY。