h bend h 平面弯头
H-bend H型弯头
H-bend wave-guide H弯波导件
h plane bend 平面弯头
h plane bend h 平面弯头
H HAIRPIN BEND 发夹弯
H plane waveguide bend H面弯波导
Conclusion: We use L as arch length and H as chord length to bend syringe needle that is used to posterior superior alveolar nerve block anesthesia by intraoral injection. The success rate is 98%.
结论：以牙槽孔至颧下嵴起始部的弧长和弦长为标准弯制注射针头，采用口内注射法进行上牙槽后神经阻滞麻醉，成功率为98％。
The H-bend wave-guide is the important part of the serve radar, and it is widely machined and applied.
H弯波导件为军用雷达上的重要构件，加工量大，应用广泛。
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