bottom head
短语词组
- bottom of head 下头
- bottom -head rivet 圆头铆钉;翻译
- bottom knife head 下刀片滑块
- Cone bottom elliptical head tank 立式椭封锥底储罐
- spherically dished bottom head 半球形底封头
- RPV bottom head 反应堆压力容器底封头
- bottom head cap screw 美不雅的半圆头螺丝
- bottom head centre disc 底封头中心碟形盘
- cylinder bottom head 缸底盖;汽缸底盖 返回 bottom head