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Ⅰ板（简称Ⅰ空心大板），是该类空心大板使用多一种板。

This paper puts forward a new type of bolted anti-creepers, which changes the fixture mode of the dowelled anti-creeper.

提出了一种新螺栓式钢器，改变了穿销式器紧固方式。