The sound of a snore (up to 69 decibels) can be almost as loud as the noise of a pneumatic drill.
鼾声(最高达69分贝)的响度可能相当于风钻的噪音。
It can provide the base for noise control of pneumatic drill.
为气动凿岩机噪声治理提供了依据。
The frame construction, the work flow and the three dimensional modelling method of pneumatic rock drill based on virtual prototype technology were elaborated.
阐述了气动凿岩机虚拟样机设计的框架结构、工作流程和三维模型构建方法，并在此基础上进行了参数化设计与运动仿真的研究。
Finish the pneumatic design of all the functions of hill-drop drill, and produce the pneumatic circuit drawings.
对气动部分的各种功能进行了设计，并绘制出气动回路图。
A kind of pneumatic tray automatic drill was designed in order to improve work efficiency and work environment.
为了提高加工效率、改善工作环境，设计开发出一型气动盘式自动钻孔机。
This paper designed a new type of muffler for pneumatic rock drill with the theory of impedance.
利用阻抗消声原理为气动凿岩机设计了一种新型的消声罩。
The noise from that pneumatic drill outside gets on my nerves.
外面风钻的噪音真使我心烦。
The invention of pneumatic drill.
风钻的发明。
The paper uses the method of value engineering project appraisement to compare corkscrew groove-wheel wheat precision drill and wheat pneumatic precision drill.
利用价值工程方案评价的方法，对螺旋槽轮式小麦精量播种机和气吸式小麦精量播种机进行方案评价比较。
The paper uses the method of value engineering project appraisement to compare corkscrew groove-wheel wheat precision drill and wheat pneumatic precision drill.
利用价值工程方案评价的方法，对螺旋槽轮式小麦精量播种机和气吸式小麦精量播种机进行方案评价比较。
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