... Extension coefficient 移距系数，伸长系数 Extension coil 加长线圈 Extension coupling 伸缩联轴器 ...
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extension coil spring 拉伸螺旋弹簧
cylindroid helical-coil extension spring 圆柱螺旋拉伸弹簧
extension coil ispring 拉伸螺旋弹簧
coil extension spring 圆柱螺旋拉伸弹簧
coil extension 线圈槽外直线部分
Objective:To explore the utilization of four angles coil cable root cap attachment in single side distal extension removable partial dentures.
目的：探讨四角圈簧根帽附着体在后牙游离缺失单侧修复中的应用。
The coil pipe of the condenser also has the advantages of difficult damage and extension of the service life of the device.
这种冷凝器盘管还具有不易损坏，能延长设备使用寿命的优点。
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