passenger berths 中文意思是什麼
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Data in this chapter show the conditions of transportation, postal and telecommunication services, mainly covering freight and passenger traffic, freight handled at ports, transportation infrastructure and machinery, civil motor vehicles and transport vessels, berths and warehouses at major ports ; business volume of postal and telecommunication services, main communication capacity of telecommunication services, and level of postal and telecommunication services
本章反映我市交通運輸業和郵電通信業情況，主要包括貨物和旅客運輸量、港口吞吐量、交通基礎設施和運輸營運工具、民用車輛和船舶、主要港口碼頭泊位和倉庫、郵電業務、電信主要通信能力和郵電通信水平。 -
The results of the experiments have showed that the vibration of the head and the buttock mainly take place in the frequency of 0. 5 ~ 20hz, the vibration acceleration of the passenger ' s head on the high - level sleeper bus at highway does not exceed 1. 20 m / s2, the buttock ' s vibration acceleration is not more than 1. 00m / s2, however the acceleration of the legs " vibration is less than 0. 50m / s2. the vibration experiments of trains were done on the hard and soft berths in the mountain diverged line and the plain main railway, the data showed that the vibration of the passenger ' s head and pelvis mainly took place in the frequency of 0. 5 - 15hz, under this range, the acceleration of head ' s vibration do n ' t exceed 0. 80m / s2, the but tock ' s vibration acceleration is not more than 0. 40m / s, the legs " vibration acceleration is less than 0. 30m / s
數據分析表明，頭部和臀部振動主要發生在0 . 5hz 20hz ，高檔公路臥鋪客車在高速公路上，頭部振動加速度值一般不超過1 . 20m s ~ 2 ，臀部振動加速度值一般在1 . 00m s ~ 2以下，而腿部振動加速度值一般在0 . 50m s ~ 2以下；鐵路臥鋪客車臥姿乘客振動試驗分別在山區支線和平原干線上運行的硬臥及軟臥臥鋪進行，數據分析表明，頭部和臀部振動也主要發生在0 . 5 15hz ；平原干線的鐵路軟臥，頭部振動加速度不超過0 . 80m s ~ 2 ，臀部振動加速度值不超過0 . 40m s ~ 2 ，而腿部振動加速度值則在0 . 30m s ~ 2以下。
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