spring bow

Spring bow ( drawing instruments) Application of FHT Collision Proof Crossbeam and Safety Catch Holding Apparatus

弹簧圆规（绘图仪）FHT型弹性防撞梁及缓冲托罐装置的应用

Casing centralizer with double bow spring blade is modified from single bow.

使用最普遍的是单弓形弹簧片套管扶正器.

Spring bow ( drawing instruments) Knife, sword equipment materials for spring steel, electricity once bright moon, good flexibility, and support by the masses.

刀，剑器械用料为弹簧钢，电渡日照月亮，弹性好，受到国内外拥护的好评。

Casing Centralizers with bow spring blade are the most used cementing tools.

弓形弹簧片套管扶正器是使用量最多的固井工具.

Via the travel of the edge shrinking inwards, a bulge of the spring bow positioned in the stick can be pressed, and the simple effect of convenient and safe umbrella closing is achieved.

藉内缩缘之移动可压触位于中棒内之弹弓凸出部，即可达到方便安全的简易收伞效果。