spring bow

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.

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。

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

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。