billy是什么意思

用法例句

The Design & Improving of Cylinder & Packaging Auto-weave Machine;

圆筒包装带自动编织机的设计和改进

Development of special welding machine for inner surfacing welding of high-temperature cylinder;

高温圆筒内壁堆焊焊接专机的研制

Check and Adjustment of the Stress of the Cylinder of Horizontal Vessels;

卧式容器圆筒应力的校核及调整

Research on the factors affecting impact force of thin-walled tubes;

薄壁圆筒碰撞承载力影响因素研究

The tangential residual stress of the external surface of the autofrettage tubes was measured by X rays.

对自增强圆筒进行X射线外表面切向残余应力测量 ,在模型考虑材料反向屈服后的强化现象和鲍辛格效应影响的基础上 ,给出了自紧圆筒强度的计算方法。

The cause occurred the burr in the external surface of spinning tube was analyzed.

通过对圆筒旋压过程工件外表面出现有规律状的毛刺产生的原因分析,提出了加工高精度的旋压毛坯是旋压高精度工件必要条件。