left screw conveyor 左侧螺旋输送机
right and left screw 左右螺旋杆 ; 左右旋螺栓
right-and-left screw 左右旋螺栓
left hand screw 左转螺钉 ; 左旋 ; 左旋螺纹
left handed screw 左旋螺丝 ; 左旋螺旋桨 ; 左手螺旋
left-handed screw 左旋螺杆 ; 左旋螺钉 ; 左转螺旋 ; 左旋螺杆左旋螺钉左旋螺旋桨
hot rolled left screw bar 热轧左旋螺纹钢
Left-hand screw 左旋螺纹 ; [科技] 左螺旋 ; 左旋罗纹
The utility model belongs to a medical bone wall reamer which is suitable for reaming a bone wall before extracting a left screw after the healing of all kinds of fracture damage.
本实用新型属于医用骨壁扩孔器，适合于各类骨折损伤愈合后需取出残留螺钉前作骨壁扩孔用。
The rest of each screw was left untreated.
其余的每一个螺丝就离开未处理。
The screw is of modular design and its active part consists of two identical screws that are common screw element and left-handed screw element with shallow grooves.
其螺杆为积木式结构，通常由芯轴和装在其上的正螺纹元件和浅开槽反向螺纹元件组成。
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