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- The lens hood is used to cover up the lens. 遮光罩是用来遮盖镜头的。
- The telescoping lens hood is built in. 有一个内置可伸缩的遮光罩。
- Remember to take off the lens hood before you take a photo. 拍照前要记住先取下遮光罩。
- Never forget to put on the lens hood after you use the camera. 每次照相机用完以后，千万不要忘记把遮光罩盖上。
- Pressure gauges shall generally be bourdon tube or bellows type. 现场压力表应通常是波登管或波纹管型。
- Only valves such as packless diaphragm or bellows type should be used. 只能使用无衬垫膈膜阀或波纹管阀。
- Together with the lens hood after that a whole new ballgame, contrast, color are pure, and this is due to the interference of light around. 增上遮平罩后颜色不离合座不不同了，差比度调低了，颜色也变清了，这不离是因为边际帮助平源的裁减。
- The key factors affecting the stagnation point position of L-type pipeline section are the setting position of bellows type expansion joint and the bend angle degree. 影响水平转角管段驻点位置的主要因素为波纹管补偿器设置位置、弯头角度。
- The straight line type lens barrel is sleeved in the driving lens barrel in parallel mobile mode relative to the axle center of the fixed lens barrel. 直进镜筒采可相对于该固定镜筒的轴心平行移动方式套合于该驱动镜筒内。
- Pilot operated valves shall be considered for back pressures greater than 40% of set pressure if more favourable de-rating factors result in a valve smaller than a bellows type. 如果更多有利的非测定因子导致阀门小于波纹管类型的，对于背压大于设定压力的40%25的，应考虑辅助操作阀。
- Shaft sealing adopts single (double) face, bellow type mechanical seal, it also can adopt soft packing, is can meet sealing demands of all kinds of conditions. 轴封采用单（双）端面、波纹管等形式的机械密封，也可采用软填料密封，能适应各种条件下的密封要求；
- The calculation of stagnation point position of straight pipeline section with both movable ends and L-type pipeline section with bend at one end and bellows type expansion joint at other end is discussed. 摘要探讨了两侧为活动端的直管段及一侧活动端为弯头，而另一侧活动端为波纹管补偿器的水平转角管段驻点位置的计算。
- Balanced bellows seals may be required instead of conventional type due to process fluid considerations. Pilot operated valves are acceptable in place of bellows type for clean services. 出于对工艺介质的考虑，平衡波纹管密封可能要求替代常规类型。对于洁净用途，允许用辅助操作阀替代波纹管类型。
- Some improvements for mechanical seals on mid-pressure ammonia pumps in our plant is summarized,A performance contrast is analysed and some application recommendations are given in future service preferentially for the metal bellow type mechanical seals. 结合某中压热氨泵的机械密封改造 ,对金属波纹管机械密封与普通机械密封的性能对比进行了分析 ,指出金属波纹管机械密封可以在很多工况下取代使用 ,辅助密封圈的普通机械密封。
- Design of Lens Hood for Star Sensor and Result Simulation 星敏感器中遮光罩设计及结果模拟
- Application of Buried Bellows Type Expansion Joints 直埋式波纹管补偿器的应用
- Single convolution bellows type air spring 单曲囊式空气弹簧
- Double convolution bellows type air spring 双曲囊式空气弹簧
- About the Damaging of Bellows Type Expansion Joint 供热管网波纹管补偿器爆裂破损原因分析及解决方法
- Three convolution bellows type air spring 三曲囊式空气弹簧
