特长公路隧道在建设时常需增设众多辅助洞室,受制于地形地貌等因素,部分辅助洞室相距较近并与主洞结合形成高密度交叉地下洞室群.交叉隧道的开挖将造成围岩多次扰动,应力变化差异性大,难以定量描述,是一个极其复杂的力学转换过程.因此交叉隧道施工稳定性成为... 李梦瑶 - 《长安大学》 被引量: 0发表: 2021年 一种...
一、SIDDIQUESHAHPARVEJJAMAN担任职务:SIDDIQUESHAHPARVEJJAMAN目前担任天津迪彼泰克科技有限公司法定代表人,同时担任天津迪彼泰克科技有限公司;二、SIDDIQUESHAHPARVEJJAMAN投资情况:SIDDIQUESHAHPARVEJJAMAN目前是天津迪彼泰克科技有限公司直接控股股东,持股比例为100%;目前SIDDIQUESHAHPARVEJJAMAN投资天津迪彼泰克科技有限公司最...
In a video shared with state broadcaster CCTV, police were depicted following a suspected drug dealer into an abandoned brick factory. It showed suspects exchanging what the police have said were illegal drugs and money. The drone operation was live streamed to nearby officers on the ground, who...
摘要: Utilizing (R)-H3CIA as a chiral template, an unprecedented homochiral metal鈥搊rganic framework (MOF) with zeotype GIS topology is obtained from achiral 1.4-DIB ligands and Zn(II) ions, which opens up a feasible approach to create zeolitic MOFs with homochirality....
R Wulkenhaar 被引量: 0发表: 0年 Method of estimation of the angular position of a target detection radar and radar implementing the process Method of estimation of the angular position 胃 of a target detected by a radar installed on a mobile carrier, the radar transmits, via an antenna ...