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The mechanics work hard to keep the helicopters airworthy.机修工努力维持直升机的飞行性能。The airplane is airworthy.这架飞机是适于飞行的.The mechanics work hard to keep the he-licopters airworthy.机修工努力维持直升机的飞行性能。The planes were certified airworth...
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The synthesis of monomethyl hydrazine was investigated with dimethyl phosphite as methylating agent.以亚磷酸二甲酯为甲基化试剂,一步合成了单取代的一甲基肼....
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iodothyroidin的音标：iodothyroidin的英式发音音标为：[aɪədɒθaɪrɔɪ'dɪn]iodothyroidin的美式发音音标为：[aɪədɒθaɪrɔɪ'dɪn]...
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homeopathy的音标：homeopathy的英式发音音标为：[ˌhəʊmi'ɒpəθi]homeopathy的美式发音音标为：[ˌhomi'ɑpəθi]...
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鱼卵磷蛋白...
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ethylhydroxylamine的音标：ethylhydroxylamine的英式发音音标为：[eθɪlhaɪdrɒksɪ'læmaɪn]ethylhydroxylamine的美式发音音标为：[eθɪlhaɪdrɒksɪ'læmaɪn]...
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dimethylaminobenzaldehyde的音标：dimethylaminobenzaldehyde的英式发音音标为：[daɪmeθɪlæmɪnəʊben'zældɪhaɪd]dimethylaminobenzaldehyde的美式发音音标为：[daɪmeθɪlæmɪnoʊben'zældɪhaɪd]...
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二乙基癸酰胺...
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Ichthyostega的音标：...
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epithyrid的音标：epithyrid的英式发音音标为：[epɪ'θɪrɪd]epithyrid的美式发音音标为：[epɪ'θɪrɪd]...
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N, N - Diisopropylethylamine ( DIPEA ) was prepared from diisopropylamine ( DIPA ) and diethyl sulfate ( Et _ 2 SO _ 4 ).以二异丙胺 ( DIPA ) 、硫酸二乙酯 ( Et2SO4 ) 为原料合成N, N二异丙基乙基胺 ( DIPEA )....
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n.二亚甲基...
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n.皮肤病...