例句與造句

1. Strip - shape underground structures such as the tunnels and tubes for various uses can be treated as a beam on elastic foundation under earthquake condition ， although there exists soil - structure interaction ， the foundation soil vibration is dominant in other words ， analysis of earthquake response of the soil is essential to this end ， simplified models ， ( i . e equivalent mass system models based on some equivalence criteria ) are proposed ， instead of a general 3 - d continuum model in this study ， equivalence criteria are proposed and the simplified models are compared the single - mass - string model is proved to be valid and therefore applied to the analysis of earthquake response of the pearl river immersed tunnel
   條裝地下結(jié)構(gòu)如隧道、各種埋設(shè)管道等一般可看作彈性地基梁進(jìn)行靜力及動(dòng)力分析在地震條件下，結(jié)構(gòu)與土相互作用，但土的振動(dòng)成為主要因素為分析土的地震響應(yīng)需把基土這一三維連續(xù)體作簡(jiǎn)化處理，簡(jiǎn)化成為等效多質(zhì)點(diǎn)模型本文著重探討這種簡(jiǎn)化模型的建立方法，推導(dǎo)等效方程，通過(guò)幾種簡(jiǎn)化體系的分析比較，論證單質(zhì)點(diǎn)串體系的合理性，并將其應(yīng)用到廣州黃沙芳村珠江水下隧道工程的地震響應(yīng)分析，為抗震設(shè)計(jì)提供依據(jù)
2. It's difficult to find string model in a sentence. 用string model造句挺難的