问题
名词解释
柔度系数
答案
参考答案：
车辆静止停留在超高为h的线路上，其车轮滚动平面（钢轨顶面）与水平面形成的角度为δ；由于超高，车体在簧上倾斜并与垂直于轨面的中心线形成一个角度η。在略去弹簧的不对称性和减振器的影响后来计算或测量η/δ的比值称为车辆柔度系数，并用s表示。
搜题请搜索小程序“爱下问搜题”
柔度系数
参考答案：
车辆静止停留在超高为h的线路上，其车轮滚动平面（钢轨顶面）与水平面形成的角度为δ；由于超高，车体在簧上倾斜并与垂直于轨面的中心线形成一个角度η。在略去弹簧的不对称性和减振器的影响后来计算或测量η/δ的比值称为车辆柔度系数，并用s表示。
| 情景对话。 | |
| A: It's a hot day, isn't it? B: Yes, it's quite hot. I thought it would be cooler, so I come here to spend my holiday. A: Well. 1______ during the day time it's hot but at night it's much cooler. The temperature from June to August is about 25°C－33°C. B: Really? 2______ What about the weather in winter? A: It often snows and it's very cold. The lowest temperature is usually 30°C below zero at night. So we have the Ice and Snow Festival. B: 3______ A: Right. Harbin is on of the eight cities. I hope we will have good luck. B: I find people in Harbin are working hard on it; 4______ More trees and grass are being planted. The air is getting cleaner and cleaner. A: Yes. 5______ With the help of the people all over the country and with the development of our country, I think Harbin will win. B: I hope so. Best wishes for Harbin !
|