附減等級運價 的英文怎麼說

中文拼音 [jiǎnděngyùnjià]
附減等級運價 英文
r - class rate reduction
  • : Ⅰ動詞1 (附帶) attach; add; enclose 2 (靠近) get close to; be near 3 (依從; 依附) agree to; ...
  • : Ⅰ量詞1 (等級) class; grade; rank 2 (種; 類) kind; sort; type Ⅱ形容詞(程度或數量上相同) equa...
  • : Ⅰ名詞1 (等級) level; rank; grade 2 (年級) any of the yearly divisions of a school course; gra...
  • : Ⅰ動詞1 (物體位置不斷變化) move; revolve 2 (搬運; 運輸) carry; transport 3 (運用) use; wield...
  • : 名詞1. (價格) price 2. (價值) value 3. [化學] (化合價) valence
  • 等級 : 1 (按質量、程度、地位等的差異而作出的區別) grade; rank 2 (在社會地位和法律地位上不平等的社會集...
  • 運價 : bdi
  1. In this paper the train running noise level has been predicted with the theory of point sound source. the sound exposure level of a train set pass, equivalent continuous sound level and maximum sound level of a train set pass has been taken as estimate values, and some kinds of affixation attenuation on the course of noise propagation is considered, then the corresponding visual software has been developed. these make it convenient and precise to predict the noise level

    本文從點聲源的理論出發,對列車行噪聲進行預測計算,採用一列車通過時的單發暴露聲、時間特性的最大聲壓和一定時間內的效聲作為噪聲評量,並考慮了噪聲傳播過程中的各種加衰,編制了相應的可視化軟體,使噪聲預測計算方便、準確。
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