The lengthwise girders are in the form of slide-pieces facing towards the frame, and can be made of U-shaped sections. The support for the sign-board has an upright (4) onto the front of which is fixed a panel (1) by means of attachments (5) such as screws. The upright (4) has...
A、rectangular label is attached to a right circular cylinder with radius r.The label,which encircles the cylinder without overlap,has width w and an area equal to the area of the base of the cylinder. 点击查看答案 你可能感兴趣的试题
Another method of reducing end-terminal shorting is through the use of a diamond-shaped transducer (Figure 2-11c). In this device, all the terminals are essentially points, and the current spreads though the device in a nonuniform manner. Although the diamond shape is not optimal from a sens...
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Three solid cubes of lead,each with edges10 centimeters long,are melted together in a level,rectangular shaped pan.The base of the pan has inside dimensions of 20centimeters by 30 centimeters,and the pan is 15 centimeters deep.If the volume of the solid lead is approximately the same as the...
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