这是一种世纪工业,由世界最古老的食品法——1516 年《德国啤酒纯度法》指导的工业。
This is a centuries-old industry, governed by the world’s oldest food law, the 1516 Reinheitsgebot (purity law).
评论:对于非腐蚀性和高纯度产品,这是一种非常可靠的阀门。但是,它的设计使得它不适合用于腐蚀物和超高纯度产品。
Comments: this is a very reliable valve for non-corrosive and high purity products. However, the design makes this valve inappropriate for corrosives and ultrahigh-purity products.
颜色的强度是产品纯度的一种量度。
The intensity of the colour is a measure of the purity of the product.
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