3) Single-Cropping Water Bamboo
单季茭白
4) double cropping
双作，双季
5) transferring Two-season farming rice to Sing- season one
双季改单季
6) bisquaternary ammonium salt
双季铵盐
1.
The N, N-dimethyl dodecylamine and 1,4-dibromobutane were taken as the raw material to synthesize the bisquaternary ammonium salt (BQAS).
新型杀菌剂双季铵盐以其低毒、性能优良而受到广泛的关注。
2.
A kind of bisquaternary ammonium salt (BQA)was synthesized .
合成了一种双季铵盐缓蚀剂 (BQA) ,分别用腐蚀失重法和电化学测试法研究了其在HCl介质中对碳钢的缓蚀作用及缓蚀机理 。
3.
Influence of the mole ratio of formic acid to methyl alcohol and chloroacetic acid on the synthetic reaction of bisquaternary ammonium salt was investigated.
考察了甲酸、甲醇和氯乙酸配比对双季铵盐合成反应的影响 ,当n(1,3 丙二胺 )∶n(甲酸 )∶n(甲醛 ) =1 0∶4 0∶6 4 ;n(氯乙酸 )∶n(十六醇 ) =1 2∶1 0 ,胺甲基化收率为 6 3 1% ,季铵化收率为82 1% ,二步总收率为 5 1 8%。
补充资料：掷茭
1.见"掷杯珓"。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条