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Ⅰ型(简称Ⅰ型空心大),是该类空心大用多型。
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Ⅰ型(简称Ⅰ型空心大),是该类空心大用多型。
This paper puts forward a new type of bolted anti-creepers, which changes the fixture mode of the dowelled anti-creeper.
提出了新型螺栓式钢轨防爬器,改变了穿销式防爬器紧固方式。
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