例句與造句

1. As a part of the civil 863 plans , two multiple - contact models for two kinds of braking system are built in the paper , in which contact fields are described as coons surfaces , initial velocity is programmed in fortran . the thermal - mechanical coupling braking processes are simulated for the first time by msc . marc , the general - used nonlinear fem software . time distributions of the velocity , the stress and the temperature of the components under various initial velocity and brake force are obtained , which offer theoretic gist to study the life of the wheel , the disc and so on
   作為國家行業(yè)863重大課題《鐵路機(jī)車車輛虛擬樣機(jī)系統(tǒng)》的一部分，本文在研究接觸問題和熱?機(jī)耦合問題數(shù)值方法的基礎(chǔ)上，采用國際上通用的非線性有限元分析軟件msc . marc建立了踏面制動(dòng)和盤形制動(dòng)主要部件的多體接觸計(jì)算模型，其中用解析方法描述，即用nurb曲線、高斯曲面來描述接觸區(qū)域，用fortran語言編寫定義初速度的用戶子程序，首次對(duì)兩種制動(dòng)過程熱?機(jī)耦合進(jìn)行了數(shù)值仿真，定量給出了主要制動(dòng)部件在不同初速度、不同制動(dòng)力下各個(gè)時(shí)刻的速度、應(yīng)力和溫度的變化規(guī)律，為研究車輪、閘瓦以及制動(dòng)盤壽命提供了理論依據(jù)。
2. It's difficult to find multiple-contact in a sentence. 用multiple-contact造句挺難的