主法 meaning in English

substantive law

Primary flange rating is class 600 or lower
主法兰等级为600级或以下。
Welding necks for glass lined vessels ; form h main flanges for clamp screw connections ; dimensions
搪瓷容器的焊接颈.夹紧螺纹接头的h形主法兰.尺寸
Conclusion the mathematical model and the numerical method presented in this paper can simulate the main phenomenon observed in the related experiments
结论本文给出的数学模型和数值主法能够较好地模拟有关实验所观测到的主要现象。