我们需要各方面的帮手：工程师、科学家（例如地质学家）和教师。We need helpers of all types, engineers, scientists (e.g. geologists) and teachers.查理？噢，他是个不可多得的好帮手，非常喜欢孩子。Charlie? Oh, he's a treasure, loves children.这种电池充电器是摄影工作者的好帮手。This battery bo...
The avionics electronic system of new generation is a high integrated system.新一代航空电子系统是一种高度综合化、模块化的系统.Elastomeric Bearings, Engine Mounts, Avionics Mounts , Tuned Vibration Absorbers , Tension - Torsion Straps, Dampers.弹...