1) double cropping
双作，双季
2) double cropping in one season
一季双作
3) double rice cropping
双季稻作
4) double continuous cropping late rice
双季连作晚稻
1.
Studies on the techniques of nitrogen and potassium fertilizers application of no-tillage and cast transplanting in double continuous cropping late rice;
双季连作晚稻免耕抛秧氮钾肥施用技术的研究
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：2,2-双氯甲基-三亚甲基-双[双(2-氯乙基)磷酸脂]
CAS：38051-10-4
分子式：C13H24Cl6O8P2
中文名称：2,2-双氯甲基-三亚甲基-双[双(2-氯乙基)磷酸脂]
英文名称：2,2- bis(chloromethyl)-trimethylene bis[bis(2-chloroethyl)phosphate]
phosphoric acid, 2,2-bis(chloromethyl)-1,3-propanediyl tetrakis(2-chloroethyl)
2,2-bis(chloromethyl)trimethylene bis(bis(2-chloroethyl)phosphate)
2,2-bis(chloromethyl)-1,3-propanediyltetrakis(2-chloroethyl)phosphate
分子式：C13H24Cl6O8P2
中文名称：2,2-双氯甲基-三亚甲基-双[双(2-氯乙基)磷酸脂]
英文名称：2,2- bis(chloromethyl)-trimethylene bis[bis(2-chloroethyl)phosphate]
phosphoric acid, 2,2-bis(chloromethyl)-1,3-propanediyl tetrakis(2-chloroethyl)
2,2-bis(chloromethyl)trimethylene bis(bis(2-chloroethyl)phosphate)
2,2-bis(chloromethyl)-1,3-propanediyltetrakis(2-chloroethyl)phosphate
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