研究了重金属铜对异毛目纤毛虫多态喇叭虫 ( Stentor polymorphrus ) 的急性毒性影响.The actue toxic effect of heavy metal Cu ~ ( 2 + ) to Stentor Polymorphrus ( Ciliophora, Heterotrichida ) was studied....
Both Sue and Jude together went to the office of the district to give notice.淑和裘德两个一块儿到本地登记局去申请结婚.Do I have to give notice if I want to move?如果我想搬出去需要提前通知你 吗 ?How do I give notice that my child will leave a class?假如我的孩子将...
The lads had spent all evening tanking up on scotch.小伙子们整晚都在狂饮苏格兰威士忌.They were already at the bar, tanking up in beer.他们已经到了酒吧间, 正在大喝啤酒.Blood seemed like best fit for tanking.鲜血看起来最适合坦克....
Then something seemed to snap in me. I couldn't endure any more.这时候，我的心里像有个东西突然绷断了——我再也忍受不了啦。He had to endure the racist taunts of the crowd.他不得不忍受那群人种族歧视的奚落.It is better to die of repletion than to endure hunger.饱死...
Many of the refugee villages are in isolated areas.很多难民村落都在偏远地区。Refugee workers said such action was a violation of medical ethics.难民工作者说那种行为是对医德的亵渎。Overcrowding and poor sanitary conditions led to disease in the refugee...
简要介绍以此类方法对合成苯甲醛的研究.Based on the reactions , this paper reports research for synthesizing benzaldehyde.再溴代得到2-溴 -4,5-二甲氧基苯甲醛,收率为91.9%,并分析溴代过程中甲酰基的邻位效应及溴代产物的稳定性.This product with Br 2 was obtained 2 - bromo - 4,5 - hydroxy...
A multifunctional additive ARJ for drilling fluid was synthesized by emulsion polymerization.采用乳液聚合方法合成一种多功能钻井液添加剂ARJ, 该剂具有一剂多效的特点,使用方便.ARJ 21 is seen as the precursor to a jumbo jet.ARJ21型飞机被看作是大型喷气式飞机的前身.This probably ...