Mass concrete temperature control requirements are very strict and one of effective methods to ensure construction quality is water cooling.
大体积混凝土温度控制要求严格，通水冷却是保证其施工质量的有效方法之一。
Methods Under the strict quality control, 8 types of main farm products in 5 cities were monitored for lead and cadmium.
方法在严格的质量控制下，对5个城市8类农产品进行铅镉污染监测。
Methods Under the strict quality control, 8 types of main farm products in 5 cities were monitored for lead and cadmium.
方法在严格的质量控制下，对5个城市8类农产品进行铅镉污染监测。
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