contact: n.1.接触;联系;交涉。2.〔美国〕(有势力的)熟人;门路。3.【数学】相切;【电学】接触;触头;触点;【无线电】通讯;【军事】(飞机和地上部队的)联络。4.曾与传染病接触者;【医学】传染病带菌嫌疑人。短语和例子a man of many contacts 交际广[门路多]的人。 an auxiliary contact联锁触头。 first contact【天文学】初亏
Railway rolling stock . all - or - nothing contact relay and its fixed connector . general and testing 铁路机车车辆.非全即无接触式继电器和其固定连接器.总则和试验
2.
Railway rolling stock . all - or - nothing contact relay and its fixed connector . collection of particular leaves 铁路机车车辆.非全即无接触式继电器及其固定连接器.特殊离合连接
3.
Railway rolling stock - all - or - nothing contact relay and its fixed connector - part 2 : collection of particular leaves 铁路机车车辆. "有或无"接触式继电器及其固定连接器.特殊离合连接