例句與造句

1. It will present a new method - frequency - domain regression ( fdr ) method based on system identification theory for calculating transient heat flux through multi - layer walls . first , the frequency characteristics of the total transmission matrix are calculated within the frequency range concerned . then , a simple polynomial 5 - transfer function is yielded from the theoretical frequency characteristics for internal , cross and external heat conduction by applying appropriate identification algorithm , respectively
   首先在所關(guān)心的頻域范圍內(nèi)計(jì)算出總的傳遞矩陣的頻率響應(yīng)，然后采用適應(yīng)的辨識(shí)算法從墻體不穩(wěn)定傳熱的理論頻率響應(yīng)中構(gòu)造出一個(gè)簡(jiǎn)單的多項(xiàng)式s -傳遞函數(shù)，該多項(xiàng)式s -傳遞函數(shù)與墻體瞬時(shí)傳熱的理論的超越s -傳遞函數(shù)完全等價(jià)。
2. It's difficult to find multi-layer wall in a sentence. 用multi-layer wall造句挺難的