例句與造句

1. First , the working principles of the combustion control system of marine main boiler in present use and its disadvantages are discussed in the paper ; in the light of the structure and motion traits of marine main boiler , the combustion control systems of single and double cross amplitude limits are designed . at the same time , the schematic diagram of system and recovery curves of some relative parameters are given , the system working principles and its advantages and disadvantages are discussed . based on the combustion control system of dual - crisscross amplitude limit , by selecting the independent variable , the fixed offset is improved into variable offset , the combustion control system of variable offset dual - crisscross amplitude limit is designed
   首先討論了目前船用主鍋爐燃燒控制系統(tǒng)的工作原理及存在的不足；針對船用主鍋爐的結(jié)構(gòu)及運行特點，設(shè)計了單交叉限幅燃燒控制系統(tǒng)和雙交叉限幅燃燒控制系統(tǒng)，同時給出了系統(tǒng)原理圖及有關(guān)參數(shù)的過渡過程曲線，討論了系統(tǒng)工作原理及優(yōu)缺點；在雙交叉限幅燃燒控制系統(tǒng)的基礎(chǔ)上，將固定偏置經(jīng)過自變量的選取，改進成變偏置，設(shè)計了變偏置雙交叉限幅燃燒控制系統(tǒng)，給出了系統(tǒng)原理圖及有關(guān)參數(shù)的過渡過程曲線，同時也給出了空氣壓力和燃油流量正負偏置函數(shù)與變偏置折線函數(shù)的關(guān)系式。
2. It's difficult to find variable offset in a sentence. 用variable offset造句挺難的