metering pin carburetor rod液位量杆
double pin sucker rod两头阳螺纹的抽油杆
metering pin carburetor rod spring量油杆弹簧
needle supporting pin rod针支承连接杆
Pin climbing-rod插销爬杆型
Rod pin钎杆销;圆柱销
connecting rod pin连杆销
adjustment rod pin调节杆销
angle ring rod pin角铁环杆销