echo n. (pl. echoes) 1.回聲,反響;共鳴,反映。 2.重復(fù),摹仿;摹仿者;應(yīng)聲蟲。 3.【音韻學(xué)】與上句末音押韻的詩句。 4.〔E-〕 【希臘神話】山林的女神。 5.(雷達的)回波,反射波。 find an echo in sb.'s heart 得人共鳴。 to the echo 大聲,高聲 (applaud [cheer] to the echo 大聲喝彩)。 vt. 1.使反響。 2.模仿,重復(fù)。 3.反射(聲音等)響。 echo sb.'s words 隨聲附和。 vi. 1.發(fā)出回聲,共鳴 (with)。 2.重復(fù)。 3.(橋牌戰(zhàn)中)打出報信牌。
Nondestructive testing of concrete structures using impact - echo method 沖擊回波法檢測混凝土結(jié)構(gòu)
Currently , echo methods are defined for the following data types 目前,回送方法是為下列數(shù)據(jù)類型定義的:
Application of low - strain echo method to examining integrality of pour - pile 低應(yīng)變反射法檢測灌注樁完整性
Which does exactly the same job as the echo method used above 還可以更改變量,它所做的工作與上面所用的echo方法完全一樣。
Multiple echo method 多次反射法
Standard test method for measuring the p - wave speed and the thickness of concrete plates using the impact - echo method 用沖擊回聲法測量p波速度和混凝土板的厚度的標(biāo)準(zhǔn)試驗方法
Two kinds of methods were used : acoustic impedance inversion ( all ) method and statistical characters extraction ( sce ) of sound echo method 主要研究了反演底質(zhì)聲學(xué)參數(shù)和統(tǒng)計特征量兩種方法。
The elastic modulus of a special alloy material are measured by the ultrasonic pulse - echo method , when the temperature is changed from - 20 ~ 60 為實現(xiàn)超聲聲速的快速、精確測量應(yīng)用數(shù)字相關(guān)法精確確定超聲信號的傳播時間。
Explain the characteristics of piezoelectric crystals and the factors relating to the resonant frequencies of a piezoelectric crystal , and the procedure of the pulse - echo method 說明壓電晶體的特性和與壓電晶體的共振頻率有關(guān)的因數(shù),以及脈波回波法的過程。
Each of such bodies as tunnel lining , road way and road surface floorslab has only one inspection face , and the shock echo method has become a new technique for detecting thickness and defects 摘要隧道襯砌、路道、路面樓板等只有一個檢測面,沖擊回波法成為新的厚度及缺陷檢測方法。