A work machine tire (10) includes an annularbody (11) of elastomeric material that includes a middle radial region (12).
一种作业机器轮胎(10)包括弹性材料制成的环形本体(11)，所述环形本体包括中间径向区域(12)。
2
It connects with threads on both ends of pipe body, which allows a smaller casing O. D. and increases annular gap to facility casing running in and improve cementing quality.
无接箍式套管靠管体两端的螺纹连接，所以套管外径尺寸小，可增大环形间隙，便于套管下入和提高固井质量。
3
In the temperature detector used for temperature compensation, an annular groove is circled at the circumference of the side part of the bottom end of the protecting tube body part.