Meanwhile, acetone was a polymerization inhibitor in preventing the self - polymerization ofp - methoxybenzyl chloride, and 11. 同时探索了甲氧基苄氯自聚的阻聚剂, 初选的阻聚剂丙酮可使甲氧 基苄 氯粗品的收率提高11.
在大农场,牲畜通常是打烙印的.On big farms cattle are usually stamped with brands.他不愉快的童年在他心灵上留下了深刻的烙印.His unhappy childhood has branded him for life.我们已经给我们的牛打上了烙印.We have branded our cattle....
His deal with Disney will run out shortly, freeing him to pursue his own project...他和迪斯尼的协议很快就要到期，这样他就可以腾出身来发展自己的项目了。...the freeing of the last hostage.最后一名人质的获释There were more civilians working for the police, freeing o...
Joints between reinforcement members can be made satisfactorily with tin solder.锡焊能够满意地做成加筋构件之间的接头.Single plated nickel barrier terminations has excellent solder heat resistance for soldering.外部电极为镍的电镀构造,于焊接时具有极优越的耐热性.Fe...
一些气球飞行家曾提到在舰上使用系留气球的问题.Some balloonists talked of using captive ', ballons from ships.为研究系留气球稳定性,建立了系留气球的三维非线性动力学模型.To stability analysis of tethered balloon, a three dimensional nonlinear mathematical model tethere...