单词	observation methods
释义	observation methods 观测方法
随便看	adjustable propeller adjustable proportional controller adjustable proscenium adjustable pulley Adjustable pulsant direct current source adjustable pulse width pacemaker adjustable pump vane adjustable pusher train adjustable quality factor adjustable rail fastener adjustable rail gauge adjustable rail lifter adjustable rake adjustable rake block adjustable range Adjustable range of backrest angle adjustable range of die shut height adjustable range of output voltage adjustable range ring adjustable-range thermometer adjustable rate adjustable-rate adjustable-rate bond adjustable rate convertible note adjustable rate mortgage