changeover system

基本解釋

There shall be semi-auto change over system in the gas yard and main pressure valve and relief valves should be located outside the lab building.
安裝半自動轉換閥控制氣瓶更換，主要的控制閥門和減壓閥門都安裝在實騐室外。
LPG bi-fuel system placed in the EFI engine is introduced in this article, the fuel change-over switch in the LPG system is to control the fuel conversion.
介紹了一種可用於電噴發(fā)動機的LPG改裝系統(tǒng)，系統(tǒng)設置了燃料轉換開關來控制燃料的轉換。
As a result of the modification, working conditions of the bar change-over system has been improved, piercing quality ensured and noise level significantly lowered.
使用改進後的頂桿轉交裝置，改善了更換裝置的工況，保証了穿孔質量，大大地減小了噪音。

France's huge union-dominated education system, with 1m teachers in over 70, 000 schools, is stubbornly resistant to change.
ECONOMIST: France