The utility model has the advantages of theft prevention, convenient use, reliability and low cost, and can replace the dirt removing plug screw of the exiting oil tank.
本实用新型具有防盗、使用方便、可靠、成本低等优点，能取代现有的油箱排污螺塞。
The utility model relates to a jack screw and plug screw driver, which is characterized in that a hole is drilled along an axial direction in a screw, and a plug is added on the head of a screwdriver.
一种插孔螺钉及插头螺丝刀。它是在螺钉上沿轴向钻了一个孔，在螺丝刀头部加了一个插头。
Motion and force of the solid plug in the solid conveying zone were analyzed deeply in the two equivalent cases of the inner screw.
在固体输送段对内螺杆的两种等效情况下固体塞的运动和受力作了深入分析。
应用推荐