1) prick holes with a thick pin
用一根粗针穿孔
2) Perforative base
根部穿孔
3) root perforation
根管穿孔
1.
The purpose of this study was to evaluate the success rate of root perforation repair using MTA.
根管穿孔是根管治疗最不期望出现的并发症,会导致根管的完整性受破坏,相邻牙周组织的破坏,根管穿孔的修补成为保存患牙的重要的治疗方法。
4) arbor
[英]['ɑ:bə] [美]['ɑrbɚ]
穿孔针
1.
Calculation of tension acting on arbor in process of extruding aluminium alloy tube without lubrication;
铝合金管材无润滑挤压穿孔针拉力的计算
2.
The extrusion length is mainly determined by arbor strength when aluminium alloy tube is extruded without lubrication based on the calculation of arbor′s pulling force.
根据对穿孔针所受拉力的计算 ,得出如何确定无润滑挤压铝合金管材时合理的铸锭长度 ,以减少挤压时的断针现象。
5) to perforate something with a pin
用针在某物上穿孔
6) first perforation
一次穿孔
1.
The paper introduces the trial-producing process of the thick wall seamless steel tube using the technology of first perforation and secondary perforation.
文章介绍了采用了一次穿孔和两次穿孔技术生产厚壁无缝钢管的试制工艺过程,并对所生产的五个系列产品进行了检测,结果表明产品的尺寸精度、表面质量和力学性能均满足相关标准及用户的要求,具备批量生产能力。
补充资料：成都无缝钢管厂管坯在菌式穿孔机上穿孔
成都无缝钢管厂管坯在菌式穿孔机上穿孔
成都无缝钢管厂管坯在菌式穿孔机上穿孔
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条