Machined brass construction, chrome nickel plated body, EPR rubber check disc assemblies and Buna 'n' seals, stainless steel springs and pressure plates are standard.
标准配置为机加工黄铜结构，镀铬镍阀体，乙丙橡胶止回阀瓣总成和丁钠橡胶密封，不锈钢弹簧和压力板。
A pure nickel coating and n-Al2O3/Ni composite coating were prepared.
制备了纯镍刷镀层和镍基纳米氧化铝复合刷镀层。
In this paper the N-isopropyl-O-toluidine has been synthesized by means of co-catalysis used sulfuric acid as main catalyst and Nickel salt as catalytic promoter.
本文研究了以硫酸为主催化剂、镍系过渡金属为助催化剂的中压液相催化法合成n -异丙基邻甲苯胺。
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