production of proof

The lining support commonly used in practice is poorly water proof, short life and needs constant maintenance, so it seriously interferes with the production of underground mine.

常规的干砌料石支护，隔水性能差、寿命短、维修量大，严重地影响生产。

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Apply of PBG-□/ 10 ( 6) Y Mineral Product Flame-proof Type High Vacuum Switch in Mine Pit Production

PBG-□/10（6）Y隔爆型高压真空开关在矿井生产中的应用

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The properties, production technology and classification of single-piece of fire-proof glass are described in this paper.

介绍了新型建筑安全防火玻璃的防火原理 、 生产工艺及产品性能特点.

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The perfect combination between the good nature of the production function of constant returns to scale and perfect competition is necessary to prove the legitimacy of the marginal distribution theory, which was widely seen as proof of the legality of the market economy.

而生产函数规模报酬不变的良好性质与完全竞争的完美结合，则为证明边际分配理论的合法性起了重要的作用，这也被广泛地认为是市场经济合法性的证明。

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Clear proof of this fact is provided by the great success of the present form of the army and civilian production drive we have promoted.

比如我们提倡采取现有样式的军民生产运动，发生了很大的效果，就是一个明显的证据。

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