几十年来，美国国家标准学会设计的ANSI法兰已经为石油和天然气工业提供了壹种适用的密封技术，而且卓有成效。
For decades, American national standards institute ANSI flange design has been for the oil and gas industry is provided one of the sealing technology, and effectiveness.
你好，我地名字叫华清，是壹位来自遥远的中国的尿迷，这是俺给你写的第一封信。
Hello, my name is Huaqing, is a far from the Chinese fans, which I write to you the first letter.
你好，我地名字叫华清，是壹位来自遥远的中国的尿迷，这是俺给你写的第一封信。
Hello, my name is Huaqing, is a far from the Chinese fans, which I write to you the first letter.
应用推荐