虽然现在的质量控制更加严格，但到目前为止仍然没有一种方法能十分安全的检测牛奶及其他乳制品质量。
Although stricter quality controls are now in place, the dairy industry still lacks a foolproof way of measuring the quality of milk and diary products.
没有简单的、持续的质量控制方法，严格的采集、加工及储存标准都是必需的预防措施。
Without a simple method for continuous quality control, rigid standards of collecting, processing, and storage were essential precautions.
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.
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