您要查找的是不是：
- device for railway points 车上转换装置
- This is a device for squaring the circle. 这是一个不可能实现的方案。
- Automatic Cable Testing System for Railway Point Switch 铁路转辙机用电缆导通测试系统
- 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
- 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
- Traction Equipment and Device for Railway Electrification 电气化铁路牵引供变电设备及器材
- Research on density measurement device for railway bulk cargo 铁路散堆装货物密度计量装置的研究
- Is this right for railway station? 去火车站从这儿走，对吗?
- 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。
- Study on EMC of electronic control device for railway vehicles 铁路机车车辆电子控制装置的电磁兼容性研究
- 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
- Heat-shrinkable accessories for railway signal cable. 四、铁路信号电缆接续附件。
- 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
- The Design of Automatic Alarming Device for Railway Cross without Watch 无人看守铁路道口自动预警装置设计
- 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
- 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
