介绍了为更好地提高片式散热器产品的质量,使其适用于炎热、潮湿等恶劣环境,及耐大气腐蚀的能力,对片式散热器进行热镀锌的工艺及质量检验。%The ground conductor control network was destroyed when mine reconstructing in Bulianta coal mine. By collecting the ground existing data, constructing ground GPS control network, the underground conductor control network was layout and contacted to the underground conductor system based the ground control results. Finally systematic transformation optimization was completed for the existed underground tunnels by Adjustment calculation.
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