主弦 meaning in Chinese

principal chord

Machining of main chord of tower crane by c630 lathe
630车床成组加工塔机主弦杆
Yes , you can twist it that much
我说肯定的,你可以把主弦旋紧1 / 2 ?的
First , twist the cables about 3 full twists . then twist the string about 6 twists . i ' m guessing at the numbers , but i should be close
首先,捻紧3圈缆索.然后捻紧主弦6圈左右.我估计就那么些吧,八九不离十
Being pulled to the side as it is by the cable guard i would think a person would want to split the difference on the cam lean between the control cable and the string
鉴于主控缆难免会被缆系导轨拨到一边去,我想这位无非是要在主控缆和主弦之间折衷一下
Taking thickness of web members and main chords as design variables and the lightest weight of crane booms as objective junction , considering constraints of rigidity and stability etc . , this paper establishes the math model of optimal design
摘要选取起重机臂架的腹杆壁厚和各节臂架的主弦杆壁厚为设计变量，以最小重量为优化目标，考虑刚度和稳定性等约束条件，建立优化数学模型。