drop target  置放目标

multi-target target tracking  多目标跟踪

drop by drop  一滴一滴地

New target and used target  新靶和旧靶

target and target environmental characteristics  目标和目标环境特征

target to non target ratio  靶与非靶比：靶与非靶器官放射性强度比

target and non-target organism  靶标和非靶标生物

multiple-target-situation decisions with a synthesized target  单目标化局势决策

target and non-target insect  靶标与非靶标昆虫

~+Drop tower tests  2型糖尿病; ~＋落塔试验

a drop  滴

a drop in the bucket  九牛一毛; 沧海一粟

a drop quiz  突击测验

abnormaL drop  不正常掉牌; 不正常降低; 不正常丢失

Abnormal flower and fruit drop  异常落花落果

Abrupt temperature drop  温度骤降

absolute speed-drop  绝对转速降

acceleration pressure drop  加速度压力降

accessible voltage drop  附件

acid drop  酸味糖果; 酸粒糖