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。

Virtual haptical system is a circulate feedback closed loop, including bidirectional information transfer between virtual and really environment.

虚拟系统是一信息循环反馈的闭环系统,其中包含着虚拟环境与现实环境两者之间双向的信息传递。

To review the research progress of etiopathology on pulmonary arteriovenous malformations (PAVMs) complicated with bidirectional superior cavopulmonary anastomosis( BSCA).

综述肺动静脉异常发生的病理机制。