To train a rat, the experimenter placed it in an operant conditioning chamber: a small plastic box with a lever at one end.
为了训练小鼠，实验人员把它放在一个操作性条件反射室：一个一端置有操作杆的塑料箱。
The lever gets them out of the box, but after more and more trials, they stopped scratching at the bars and pushing at the ceiling.
杠杆让它们出了盒子，但在越来越多的尝试之后，它们不再抓栏杆和推天花板。
They prised the box open with a lever.
他们用杠杆把箱子撬开。
And the trick to a puzzle box is there's a simple way to get out but you have to kind of pull on something, some special lever, to make it pop open.
这个谜笼的设计是这样的,只要小猫拉动一个东西,它就能够逃出去，拉动一个特殊的杠杆，迷笼就会打开。
It was an old-fashioned lift, operated by a lever on a brass box.
这是一部老式的电梯，由一个黄铜框架上的杠杆操纵。
Gear box: Unique two lever universal gear box offers a wide range of cutting capacity. All ranges can be reached by moving two levers and two dials.
齿轮箱：独特的两杆通用齿轮箱提供了广泛的切割能力。所有范围都可以通过移动两根杠杆和两个表盘达到。
Gear box: Unique two lever universal gear box offers a wide range of cutting capacity.
齿轮箱：独特的两杆通用齿轮箱提供了广泛的切割能力。
The CD-HSS box drawing experimental device included four parts of die structure, lever mechanism, hydraulic and electric control system were designed based on the CD movement principle.
基于可控拉深筋运动原理设计了可控拉深筋高强度钢板盒形件拉深实验装置，该实验装置分为模具结构、杠杆机构、液压及电气控制系统四部分。
A control lever runs through a lower fertilizer passage below the fertilization box, with the upper end provided with a raised head which reaches an exit inside the fertilization box.
施肥箱下方的下肥道内贯穿有控制杆，上端设有凸头，达接在施肥箱内的出口上。
The bongrace is box structure and has protective goggles inside. The lid is the reflecting mirror, which is joined by a lever and the bongrace.
帽舌为盒式结构，内有护目镜，盒盖即反光镜片，靠杠杆和帽舌连接。
Click the black box near the lever to destroy the robot.
点击黑匣子附近的杠杆摧毁机器人。
Of a box structure and a lever-petal type spring-pressuring structure used for pressure transmission, easy to be adjusted , operated and maintained.
外表采用机箱结构，压力传递采用杠杆踏板式弹簧加压结构，调节、操作、维修均方便。
Of a box structure and a lever-petal type spring-pressuring structure used for pressure transmission, easy to be adjusted , operated and maintained.
外表采用机箱结构，压力传递采用杠杆踏板式弹簧加压结构，调节、操作、维修均方便。
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