single headed stud

... single-parent families headed by women 以妇女为家长的单亲家庭 single-headed stud 单头芯撑 single-headed rail 单头轨 ...

机械英汉词典（S-7）-机械资讯-马棚网 ... single-headed stud 单头心撑 single-heterojunction 单异质结 ...