placementn.方位;位置;实习工作;安排
placement of fill material石料抛填
placement arrangement rule布局排列规则
placement-blockage arrays布局封锁阵列
placement path optimization铺放路径优化
placement of cinerary casket骨灰安放
Placement Contracting Officer合同官安排
placement with a foster family安置到寄养家庭
Placement of choledochal stent胆总管支架放置