main power source

After probing into the dynamic mechanism of speedy insurance business growth of our country through VAR and ECM, we come to the conclusion that economic growth, together with the self-organization and self-propagation of insurance industry, is the main power source of insurance development.

利用向量自回归模型（VAR）和误差修正模型（ECM）对我国保险业增长的动力机制进行探讨，得知经济增长和保险产业的自组织和自增长是保险业发展最主要的动力源。

As the main power source of vehicle, the question how to purify NO_x emission for diesel has become one of the hotspots.

作为汽车主要的动力源，柴油机NO x的排放控制也逐渐成为研究热点。

The space solar cell array is the main power source of most of the aircrafts working in outer space.

空间太阳电池阵是大多数航天器的主电源。