例句與造句

1. as the cam profile with constant-velocity-constant-acceleration ramp feature and with continuous higher derivative lift feature is widely adopted in the advanced high-speed internal combustion engines, the cam ramp profile is fitted with a reasonable function and the cam-lift profile is fitted with a polynomial function
   考慮到高速內(nèi)燃機(jī)的凸輪大多采用具有等加速-等速特征的緩沖段和高階導(dǎo)數(shù)連續(xù)特征的工作段型式，用等加速-等速函數(shù)擬合緩沖段實(shí)測升程數(shù)據(jù)，用整體式高次多項(xiàng)式函數(shù)擬合工作段實(shí)測升程數(shù)據(jù)。
2. It's difficult to find acceleration ramp in a sentence. 用acceleration ramp造句挺難的