coalmine

Buttonwood would like to suggest two tried-and-trusted canaries for this particular coalmine.

金融人士愿意为这个特别的市场建议两个爽的预警指标。

The paper intrduces the exchange CENTREX, dispatching equipment and the com-bination of them, and puts forward the methods of improving coalmining communication capabili-ty.

将交换机CENTREX功能用于煤矿调度机,从提高煤矿通信的综合能力。