When the rotary rod moves in an upper limit position, rotation of the rotary rod can be automatically stopped.
转杆移至上极限位置时可自行停止转动。
Compared with normal rods, the carbon fibre coiled rod behaves much more advantages, such as lighter weight, better elasticity, resisting corrosion, higher fatigue limit, etc.
碳纤维连续抽油杆与普通抽油杆相比具有质量轻、弹性好、抗腐蚀、耐疲劳等优点。
As a no-rust, non-pitting tube it is superb, yet it brings even further benefit: We can fit the piston with a magnet and operate tie-rod mounted limit switches - a unique feature!
作为无锈、无蚀管，它的性能是一流的，同时也带来了另一个好处。我们可以放置一个磁铁在活塞处，操作拉杆有限开关——这是一个独特的功能！
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