twocoreadj.双磁心的(双活性区的)twonum.二；两个two-arm calipers双臂井径仪two-tier pricing两部定价法two-step process两步处理法two-runway field双跑道机场two-part pricing两部制定价two way translator双向转发机two-head printer二头打印机two-probe method双探针法two state variable双态变数two-drum slusher双滚筒耙矿机