禁毒专家说它可能会结束强效可卡因吸食泛滥的局面。Drug experts say it could spell the end of the crack epidemic.警察冲进去将他拘捕并没收了可卡因。The police moved in, arrested him and impounded the cocaine.强效纯可卡因是市面上最容易让人上瘾的毒品。Crack is the most addictive drug on ...
在匀强电场中, 电力线是平行的直线, 其间隔是均匀的.In an uniform field, the lines of force are straight parallel, and uniformly spaced.它本身是绝缘体,其导热能力优于铜,并能承受极高的强电场.It is insulator but its thermal conductivity is better than Cu.研究压电弯曲执行器在强电场作用下的非...
必须小心使用这种仪器,不能称过重的东西.The care of such instruments cannot be stressed too much.负荷过重的心脏,可能承担额外的压力负荷或容量负荷.The overburdened heart may be carrying an extra pressure or volume load.我们在使用我们既属有限而又负担过重的空军时,必须考虑到一切意外事件.We have to c...