single slip switch

single acting pump 单动泵 - 豆丁网 ... single spa new good 单孔 ，单跨 single slip switch 单交叉转辙器 single sling 单吊式 ...

分为单式交分道岔（single slip switch ）和复式交分道岔（double slip switch）两种。 冶金学名词 冶金术语 土木工程名词 基础 …

... "单打电铃"," Bell,single stroke" "单向交叉横渡道岔"," Single slip switch" "单式交叉转辙器"," Switch,single-slip" ...