安全事故机理是施工企业构建安全生产过程的理论基础。
Contruction companies structure work safety process based on safety accident mechanism.
安全生产过程是施工企业全部生产过程的重要组成部分，并标示其对安全事故的控制水平和安全生产能力。
Work safety process is an important part of overall work process of construction companies which marks safety accident controlling level and work safety capability.
从材料采购过程、技术经济、安全生产过程等方面探寻降低煤矿材料成本的主要对策，以提高企业的经济效益。
Concerning material purchasing process, technical economy, and safety production process, several solutions of material cost reduction in coalmine are discussed to increase economic benefit.
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