reciprocaladj.互惠的；相互的；互补的n.相互；互惠；[数]倒数reciprocal hybrid正反交杂种reciprocal motion往复运动reciprocal demand相互需求reciprocal barter对信用证易货reciprocal matrix逆阵reciprocal depths倒易深度reciprocal number倒数reciprocal figure可易图形reciprocal laying平行射向瞄准法reciprocal phaser互易移相器