thimblen.顶针;嵌环;套管;[计]转筒
thimble eye bolt单眼螺栓
thimble coupling套管联轴节
thimble assembly套管组件
thimble slag car渣罐车
thimble thickness套环
thimble connector套管连接器
thimble-eye bolt单眼穿钉, 单眼螺栓
thimble tube boiler套管锅炉
thimble punch holder套管冲头托架
thimble exhaust duct套管排气管