1) main sections
主干断面
1.
For the purpose of getting information on health risk caused by pollutants in the Yangtze River,five main sections of the Yangtze River in Jiangsu Province were selected and organic compounds,heavy metals and boron element in water were monitored.
为掌握长江水环境中污染物的健康风险,选取长江江苏段5个主干断面,对其水环境中主要有机物、重金属及非金属元素硼进行了监测。
2) main fracture
主干断层
1.
Large amount of geological material was studied with statistics and geomechanics method,and the distribution law of factures in Cuijiagou mine has been found out:the main fractures are along NNE and SN directions,other small fractures are controlled by the main fractures.
利用统计分析、相关因素、地质力学分析方法对崔家沟井生产中积累的大量实际地质资料进行分析研究 ,找出了崔家沟井田范围内断层发育展布的规律 ,即近SN向及NNE向断层是本区的主干断层 ,共它小断层为其派生产物 ,小断层的展布受主干断层的控制。
3) non-princip
非主断面
1.
Determination of subsidence parameters based on a observing station along the non-principal subsidence section in area with extra-thickness alluvium;
特厚冲积层非主断面观测站岩移参数的求取
5) major thrust plane
主冲断面
6) girder cross section
主梁断面
1.
Taking as an example a certain twin deck bridge which is under construction, a series of wind tunnel tests with different sectional models was performed to get the best girder cross section through aerodynamic optimization of the basic shape of girder cross section as well as the position and height of repairing-vehicle’s rail.
与常见的单幅桥面桥梁相比,双幅桥面桥梁主梁断面的气动选型更为严格,必须同时保证上下游两主梁断面都具有良好的气动性能。
补充资料：主干
1.主体部分，起决定作用的人物或力量。 2.专负某种职责的官吏。 3.主要干部的简称。 4.植物的主茎。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条