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- Reaction of lower primary alcohol and ethylene oxide was studied by zinc perchlorate as catalyst,and the products are narrow distributed. The suitable process conditions have been established. 以高氯酸锌为催化剂,环氧乙烷和低碳醇反应生成窄分子量分布的乙二醇单低碳醇醚,确定了适宜的工艺条件。
- Brass is an alloy of copper and zinc. 黄铜是铜和锌的合金。
- Brass is formed by the fusion of copper and zinc. 黄铜是由铜和锌熔合制成的。
- zinc perchlorate 高氯酸锌
- An alloy composed of lead, tin, and zinc. 铅锡锌化合物由铅、锡和锌组成的一种合金
- You should first put a small piece of zinc plate into the cup. 首先,要向杯子里放一小片锌板。
- The fusion of copper and zinc makes the metal brass. 铜和锌的熔化制成黄铜。
- An alloy of zinc and copper used as imitation gold. 铜锌合金作为仿金品使用的铜锌合金
- An alloy of copper, zinc, and tin, used in imitation gold jewelry. 金色铜一种由铜、锌和锡制成的合金,用于仿制黄金首饰
- The fusion of copper and zinc make the metal brass. 铜和锌的熔化制成黄铜。
- Zinc is generally caustic to foliage. 锌常对幼叶有腐蚀作用。
- Zinc displaces the hydrogen of dilute acids. 锌置换了稀酸中的氢。
- Hydrazine perchlorate and lithium perchlorate form two eutectics. 过氯酸肼和过氯酸锂形成两种低共熔物。
- The process of engraving zinc printing plates. 制锌版术雕刻锌印刷版的过程
- To coat(iron or steel) with rust-resistant zinc. 对(铁或钢)镀一层锌
- A red to yellow-orange zinc ore, ZnO. 红锌矿颜色由红到橘黄色的锌矿,氧化锌
- The extinct exotic bird's feather contains zinc. 那种已绝迹的珍奇的鸟的羽毛中含锌。
- Rio Tinto Zinc corporation, Ltd. 里奥廷托锌公司
- Excess zinc often produces iron chorosis. 锌素过量还经常出现铁的褪绿症。
- Zinc supplementation can improve immunity function. 锌可以提高动物机体免疫功能。