body of the acupuncture needle是什么意思

用法例句

This paper reports the detailed investigations on the composition, shaping process and material sintering of zirconia ceramic ferrule for PC type of fiber optic connectors.

本文对陶瓷ＰＣ型光纤活动连接器的关键部件二氧化锆插针体的材料配方，材料成型，材料烧结工艺进行了详细的研究。