A water pipe is hollow.
水管是空心的。
A water pipe is hollow.
水管是空心的。
The I type shear blocks dowelled bidirectional hollow plates (I SBDBHPs) are the most widely used.
剪力键式双向空心大板中的Ⅰ型板(简称Ⅰ型空心大板),是该类空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空心微方法,利用三次同步辐射曝光和显影过程来
微
。
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空心型材在挤压过程中存在的问题,阐述了改进挤压模具的具体措施和生产时的挤压结果.
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