In the light of the problems with the inspection, such as bending the rod, scratching the shoulder of the rod and incorrect action of the pressure relay, measures for improvement are put forward.
针对调试过程中出现的顶弯抽油杆、划伤抽油杆挡肩与压力继电器误动作等问题，提出了改进方法。
An ejector rod and a female die are fixed at the lower part of the upper beam, and a mold core is mounted on the lower beam. The end of the mold core has at least one shoulder.
于上架梁的下方固定有顶杆和凹模，于下架梁上安装有其一端部至少有一个肩凸的型芯。
A shoulder sprayer comprises a box body, a gas chamber, a pump, a link rod, a rocker, a crank and a spray tube with a suction pipe.
一种背负式喷雾器，由箱体、气室、唧筒、连杆、摇杆、曲柄、带吸水管的喷管组成。
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