A water pipe is hollow.
水心的。
A water pipe is hollow.
水心的。
The I type shear blocks dowelled bidirectional hollow plates (I SBDBHPs) are the most widely used.
剪力键式双向心大板中的Ⅰ型板(简称Ⅰ型
心大板),
该类
心大板中使用最多的一种板型。
A new fabrication method for hollow microneedle array is proposed with three times exposures in deep X-ray lithography of synchrotron radiation and the development procedure.
摘要提出了一种新的心微针阵
加工方法,利用三次同步辐射曝光和显影过程来加工微针。
The problems existed in extrusion process of two sorts large section hollow extrusion profilesare introduced. The concrete measure and extrusion consequence of the improved prothole die are given.
介绍了两种大断面的心型材在挤
过程中存在的问题,阐述了改进挤
的
体措施和生产时的挤
结果.
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