- restraining coil
- self-supporting coil
- 自持: control oneself; restrain on ...
- 线圈: coil
- 保持线圈: hold in winding; hold-in winding; holding coil; holding winding; locking coil; restraining coil; retaining coil
- 握持线圈: held loop
- 吸持线圈: hold-on coil; holding coil; holding on coil; holding winging; holding-out coil; retaining coil
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