Barium is found in some oilfield brines in concentrations greater than 100 mg / litre.在有些油田卤水中,钡的浓度大于100毫克/升.At lower concentrations they may even be stimulants of cell division.在浓度较低时,它们甚至能促进细胞分裂.Methods Three different...
To use nitrate as electron donor in the electron transport chain during chemosynthesis.利用硝酸盐作为化学合成作用中,电子传递链之电子提供者.Lab sessions involve hands - on use of the electron microprobe.实验部分包括电子探针的实际操作.As the beams are stably tra...
一名技师把一盒录影带装进其中一台机器。A technician loads a video tape into one of the machines.计算机安全系统将由独立的技师来设计。Computer security systems will be designed by independent technicians.他们要派一名技师来安装电话。They're sending an engineer to fix th...
They are waging warfare with drought.他们正同干旱作斗争.Many a tribe and ruling house has survived by intermarrying with its rivals, rather than waging war on them.许多部落和有门望的家族都靠与敌方通婚而不是发动战争而生存下来.The waging of war against an enemy...
To this day I have not understood Nasser's motives.我至今也搞不明白,纳赛尔为什么要这样做.Investors have come to expect such bold moves from Nasser.投资商们对雅克o纳塞尔 的这一大胆的举措表示非常的关注.What caused Nasser to bark and run to the road?纳赛尔为什么要狂叫并且...