piston inner rib 活塞内肋
inner piston [机] 内活塞
inner piston spring 活塞环内弹簧
inner piston spring seat [机] 内活塞弹簧座
The small piston inner top comprises a center cover or a connected center cover.
小塞内顶由中盖或连筋中盖组成。
In lesson two, I show how I automated the leg's inner piston using the distance tool and a simple expression.
在第二课中，我表明我如何自动化腿的内活塞使用距离工具和简单的表达。
Our company is a professional salt core (for inner cooling gallery of aluminum piston) producer in China with abundant funds and technical advantages in the production of salt cores.
我公司是中国国内专业（铝活塞内冷油道）盐芯生产商，在盐芯的生产上拥有雄厚的资金和技术优势。
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