Therefore, the authors consider that segregation of P and Si at grain boundaries is one of the important reasons for IGC of non-sensitized 316L SS in the urea medium.

故认为磷（硅）的晶界富集是固溶态316L 不锈钢在尿素生产介质中产生晶间腐蚀的重要原因之一。

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Meanwhile, the resin of urea and formaldehyde is used for medium-density overlay (MDO), a combination of concrete and plywood, used in concrete moulds.

同时，尿素甲醛的树脂用于制造中密度板(MDO)，这是一种混凝土和夹板的组合体，通常用于混凝土模具中。

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A description is given of the use of the fluid bed cooling and dedusting technology for the first time in the product urea dust collection in medium nitrogenous fertilizer plants.

介绍了流化床冷却除尘技术首次应用于中氮肥厂成品尿素除尘的情况。

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