16 8:44:44

每个企业都有自己的目标，而且越是新企业、发展较快的企业，目标越宏大。XX年后，行业领先，国内先进，进入世界500强，振奋人心… 阅读全文 0 人评论

abeltop 美国标准管螺纹 2009/6/14 20:13:30

一.标准：ANSI B1.20.1美国标准管螺纹。美国标准管螺纹不仅用于压力较低的水、煤气管道，也同时用于高温、高压系统。就管螺纹而言，… 阅读全文 0 人评论

abeltop 冷冻站控制新技术 2009/6/13 22:10:50

The IPC 11550 System is a chilled water plant automation system that is capable of operating an “all-variable speed” chilled water plant configuration. The IPC 11550 System is de… 阅读全文 0 人评论

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