by main force的意思|示意

The main character of the HVS is that, by means of fluctuating oil pressure, the pile-driving force can be changed in a higher frequency, and therefore better vibrating effect can be gained.

液压振动系统的主要特点是在桩机液压系统中的压桩油路产生流体压力变化和波动，从而使沉桩力出现高频的周期变化，产生振动压桩的效果。

Can you hear true messages, which are provided by the media who are controlled by the main market force?

媒体均被市场主力占据了，你能听到真实的信息吗？

Conclusion The main supporting force position is on abutments of the bridge supported by tooth-implant; The implant neck is the most possible area for fracture.

结论：天然牙—种植体联合桥主要支撑力的部位是颈缘处，该处为种植体折断机率最大的区域；

He caught hold of my coat-tails and pulled me down by main force.

他抓住我的上衣后摆，用力把我拽倒。

The tensile stress induced by restrained thermal and autogenous shrinkage deformations was the main driving force of cracking in concrete at early age.

温度变形和自生收缩变形等受约束形成的拉应力，是引起混凝土早期开裂的主要驱动力；

Structural internal force is calculated by changing constant load of the main girder, the cable Angle, the length of unsupported deck.

通过改变主梁恒载重量、拉索倾角、无索区长度等结构参数，分析结构参数变化对结构受力的影响。