中心连线 meaning in Chinese

line of centers
line of centres

The direction is normal to the line of centres, i.e. motion is circumferential .
该方向垂直于中心连线，即运动是沿圆周方向的。
The force acts along a line between the center of the bodies and is repulsive for like charges and attractive for unlike charges .
力沿两个带电体中心连线而作用，同性相斥，异性相吸。
It is found : ( 1 ) when the current direction is close to that of the line through the two caissons ' centers , the current speed within the area between the double caissons apparently decreases ; ( 2 ) sea ice ride - up and pile - up against the outer side of the caissons are similar to that against single caisson , and sea ice ride - up and pile - up are determnined by the sea ice velocity , sea ice thickness , tide and the storm set up ; ( 3 ) when locate two caissons , the tops of the two caissons in the shield area are no ice covered
研究发现： ( 1 )当海流流向与双沉箱的中心连线相近时，双沉箱对峙区的流速明显减小； ( 2 )双沉箱外侧区域的海冰爬升和堆积与单沉箱时基本相同，其爬升和堆积与海冰的速度和厚度、天文潮高等有关； ( 3 )双沉箱设置时，对海冰爬升和堆积会起到有效的屏蔽作用，对峙区内的双沉箱顶上不再有海冰堆积。