照像材料含有亲水胶体的感蓝卤化银卤剂层.The photographic elements contain a blue - sensitive hydrophilic colloid silver halide emulsion layer.典型的例子是碳氢化合物的卤化.A typical example is the halogenation of a hydrocarbon.许多微生物使滴滴涕脱卤化氢变为滴滴依.Many micr...
你应该用绳子围起一大片地方来卖票。You should rope off a big field and sell tickets.我用绳子把自己系在烟囱上。I roped myself to the chimney.这块大石是用绳子和滑轮给吊起来的.The stone was lifted by means of a rope and pulley....