Then suddenly, the engine coughed, spluttered and died.接着，发动机突然咔咔地响了几声，然后就熄火了。'But it cannot be,' he spluttered...“但这不可能，”他气急败坏地说道。Suddenly the engine coughed, spluttered and died.突然发动机噗噗响起来，噼啪几下就熄火了。We were ne...
pneumatic tyres充气的轮胎Driving Mode: hand wheel, hand equipment, electromotion and pneumatic actuator.驱动方式有: 手轮, 手动装置, 电动,气动.This pneumatic tool will double the speed of assembly.这个气动工具可以把装配速度提高一倍.All air is expressed from ...
Most polymer emulsion may coagulate when they enter waste streams.多数聚合物乳浊液在进入废水流时可能凝聚.Fabrication process of polymer microlens arrays is introduced based on soft lithographic UV - molding replication method.介绍了利用软刻蚀紫外模塑技...