要富集成矿只需保持长期的层间循环.Concentration of ore would simply require prolonged interstratal migration.碘离子在层间的扩散作用可以用隔层加以控制.The migration of iodide ion between layers is controlled by barrier interlayers.测量界面粘结强度的间接方法包括层间剪切强度试验.Ind...
Mother ran round the room shaking up all the cushions when the doorbell rang.母亲正在屋里跑来跑去忙着拍松所有的坐垫, 这时门铃响了。Best suitable for stitching tents, seat cushions , horse gears, and gunnysacks, cars seaming and so on.适用于帐篷, 坐垫, 抛...
店里的一些地方十分肮脏不洁，简直就是滋生细菌的理想温床。Parts of the shop were very dirty, unhygienic, and an ideal breeding ground for bacteria.科学家认为,过度接触抗菌素使有抗药性的细菌的传播更广泛.Scientists believe overexposure to antibiotics helps resistant bacteria bec...
presently的近义词有：immediately, instantly, presently, directly, shortly, soon, at once, right away。下面这些副词或副词词组均有"立刻，马上"的含义：immediately：指做完一件事后，立即就做另一件事，中间一般没有明显的时间间隔。instantly：指恰恰就在此刻，一秒钟也没耽误。presently：指不久、即将。directly和immedi...