baker valve gear中文什么意思

贝氏阀动机构

• baker:    n. 1.面包师傅。 2.〔美国〕轻 ...
• valve:    n. 1.【机械工程】阀，活门，舌门 ...
• gear:    n. 1.【机械工程】齿轮，(齿轮) ...

百科释义

After about 1910 Baker valve gear was the main competitor to Walschaerts valve gear for steam locomotives in the United States. Strictly speaking it was not a valve gear but a variable expansion mechanism adapted to the Walschaerts layout replacing the expansion link and sliding die block.