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N - hydroxyethylpyrrolidone ( NHP ) was synthesized from � � - butyrolactone and ethanolamine on Y molecular sieve catalyst by two steps.以改性Y分子筛为催化剂,γ-丁内酯和乙醇胺为原料,采用γ - 丁内酯法两步合成N - 羟乙基吡咯烷酮 ( NHP )....
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甲醇中毒...
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n.金相显微镜...
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热心的，诚挚的...
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“采伐”的英语可以翻译为：fell (timber)，cut，felling，logging ...
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kyrtometer的音标：kyrtometer的英式发音音标为：[kɜ:'tɒmɪtə]kyrtometer的美式发音音标为：[kɜ'tɒmɪtə]...
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Many divines treat them with contempt.有些神学家根本就看不起他们....
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Talk out your problems. Do not keep them bottled up.把问题说出来，别都憋在心里。The pickled vegetable of bottled coriander heart is convenient and high quality.瓶装香菜心酱菜,香味浓郁,脆爽可口,是方便佐餐之佳品.He was scheduled to appear on the Russell Harty...
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cate的音标：cate的英式发音音标为：[keɪt]cate的美式发音音标为：[keɪt]...
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“汽锅”的近义词/同义词：锅炉。...
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balop的音标：balop的英式发音音标为：['bælɒp]balop的美式发音音标为：['bælɒp]...
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我寄了信, 但留了份影印本存档.I sent the letter, but kept a copy for my files.校长把我校的所有报告都存档保存.The principal keeps all our school reports on file.清点完所定购的每一件东西后，将这份记录存档。Once you've checked off the items you ordered, put this record...
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elude的现在进行时为：eluding...
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Vendors were doing a brisk trade in souvenirs.商贩们的纪念品生意很红火。He moved at a brisk pace down the rue St Antoine.他沿着圣安托万街轻快地走去。The actress is walking at a brisk pace.那位女演员正以轻快的步伐走着。Its sales had been brisk since July.自7月以来销售一...