这所地下保管库是防盗的.This underground vault is theftproof.本所最新研制的汽车防盗锁可改写汽车防盗的历史.The newly developed by the automobile anti - theft vehicle anti - theft locks can rewrite history.包包可以往下折叠一定的长度,具有美观和防盗的功能哦.In addition , the top ca...
利用空化喷咀来产生“空泡”是获得“空化水射流”的简便方法.Some jets pulsed jet , cavitating jet, abrasive water jet are introduced.磨料水射流的性能主要取决于磨料颗粒的冲击速度.The performance of abrasive waterjet depends on the impact velocity of abrasive.在低速射流的预混火焰和扩散火焰...