您要查找的是不是：
- switching device for main and standby power sources 主备电源转换装置
- A digital switching device in telecommunications for routing lines. 电讯中用于线路路由的数字交换装置。
- This is a device for squaring the circle. 这是一个不可能实现的方案。
- A device for equalizing pressure or strain. 均衡器用来使电压或电流保持平稳的设备
- A device for indicating wind direction. 风标用来显示风向的设施
- A machine or device for separating cream from milk. 乳脂分离器一种把乳脂从牛奶中分离出来的器具
- Switching Device for Sharing One Delayer by Two Broadcast Hotlines 两套广播热线电话节目共用一台延时器的切换装置
- A device for igniting the charge of a firearm. 枪机一种用来点燃火器中火药的装置
- They use television advertising as a device for stimulating demand. 他们利用电视广告作为刺激需求的方法。
- Automatic dehydrating switch device. 脱水自动切换装置。
- A device for projecting sound waves, as in a loudspeaker. 角状扩音器一种用来产生声波的装置，如扬声器
- A device for guiding a tool or for holding machine work in place. 夹具，装配架导引工具或使机器固定在适当位置上运转的设备
- A mechanical device for lighting a cigarette, cigar, or pipe. 打火机点燃香烟、雪茄和烟斗的机械装置
- A toothed device for crushing and beating flax or hemp. 剥麻机挤榨和打碎亚麻或大麻的具齿装置
- A device for measuring the head. 头测量器测量头颅的仪器
- Application and Analysis of Live Working Switching Device for Multi-transformation Ratio Current Transformer 多变比电流互感器带电倒换装置的应用分析
- A device for measuring the speed of sound in water. 速度计，速度表用于测量声音在水中的速度的仪器
- Molecular Visualization Exercises For Modules 1-3. 单元1-3之分子视觉化练习。
- Several Design Techniques of Microcomputer-Based Switching Device for Auxiliary Power 微机型厂用电切换装置设计的若干技术
- A device for applying a lubricant. 润滑器由于加润滑剂的器具
