On-line communicational silicon-controlled rectification power source with consumable electricity and low efficiency will increase operating cost.
在线通信用可控硅整流电源自身电耗高、效率低，使运行成本增加；
The invention greatly reduces the production cost and energy consumption, and saved energy by about 40% in rectification.
本发明大幅降低生产成本和能耗，精馏节能40%左右。
The use of one transformer to run two groups of rectification circuits has also reduced the cost greatly.
用一只变压器带二组整流电路成本也大大降低。
Through the introduction of a practical example of rectification of dangerous building by using stress release method it proved that the method is an effective one with low cost and high benefit.
通过介绍某危房用应力解除法纠偏的工程实践，说明该法成本低、收效高，是一种行之有效的方法。
Through the introduction of a practical example of rectification of dangerous building by using stress release method it proved that the method is an effective one with low cost and high benefit.
通过介绍某危房用应力解除法纠偏的工程实践，说明该法成本低、收效高，是一种行之有效的方法。
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