The British are not famed for their philosophy and tend to be more practically minded.英国人不是以其哲学思想闻名，而是往往更注重实际。It is proved practically that chemical grouting can do with it.由于翻浆冒泥造成基床的软化和道碴板结引起道床整体弹性的降低,直接影响列车安全运营.Practi...
Vehicle twin - photoelectrical pointing system mainly consists of reflex light - tubes, a autocollimation theodolite and modulators.车载双联光电瞄准系统主要由折转光管 、 自准直经纬仪和相应的调制器组成.Just to avoid autocollimation errors, only Elbo Cont...
However, this method is not unconditioned because it must not affect the cooling efficiency of hydro - generators.但是, 这一措施必须以满足不对发电机冷却效率产生影响为前提.Turkey plans to harness the waters of the Tigris and Euphrates rivers for bi...