目的了解正常上颌中切牙牙根不同截面根管周壁厚度及根管面积和形态。
Objective To measure the thickness of the wall of root canal and root canal area in different cross sections of maxillary central incisors.
对于钢筋混凝土构件在正常使用状态下的截面应力计算，用传统的“等效截面法”计算十分复杂。
It was very complicated when taking the traditional equivalent section method to calculate the section stress of steel concrete structural unit under its normal working condition.
并提取了正常使用极限状态荷载组合下零号块开口梁端两端的截面内力。
Extract the internal force at both sides of the aperture girder at the load combination of normal use limiting state.
应用推荐