The condition and composition of this signal transmission structure, supply of the field meter with power, distant transmission of signal and the explosion-safe problem are dis...
本文对其应满足的条件、结构，现场仪表的供电、信号远传及防爆等问题做了较详细论述。
The condition and composition of this signal transmission structure, supply of the field meter with power, distant transmission of signal and the explosion-safe problem are discussed in this paper.
本文对其应满足的条件、结构，现场仪表的供电、信号远传及防爆等问题做了较详细论述。
We watched the explosion from a safe distance.
我们在安全距离之外观看了爆破。
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