echo n. (pl. echoes) 1.回声,反响;共鸣,反映。 2.重复,摹仿;摹仿者;应声虫。 3.【音韵学】与上句末音押韵的诗句。 4.〔E-〕 【希腊神话】山林的女神。 5.(雷达的)回波,反射波。 find an echo in sb.'s heart 得人共鸣。 to the echo 大声,高声 (applaud [cheer] to the echo 大声喝彩)。 vt. 1.使反响。 2.模仿,重复。 3.反射(声音等)响。 echo sb.'s words 随声附和。 vi. 1.发出回声,共鸣 (with)。 2.重复。 3.(桥牌战中)打出报信牌。
Nondestructive testing of concrete structures using impact - echo method 冲击回波法检测混凝土结构
Currently , echo methods are defined for the following data types 目前,回送方法是为下列数据类型定义的:
Application of low - strain echo method to examining integrality of pour - pile 低应变反射法检测灌注桩完整性
Which does exactly the same job as the echo method used above 还可以更改变量,它所做的工作与上面所用的echo方法完全一样。
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 用冲击回声法测量p波速度和混凝土板的厚度的标准试验方法
Two kinds of methods were used : acoustic impedance inversion ( all ) method and statistical characters extraction ( sce ) of sound echo method 主要研究了反演底质声学参数和统计特征量两种方法。
The elastic modulus of a special alloy material are measured by the ultrasonic pulse - echo method , when the temperature is changed from - 20 ~ 60 为实现超声声速的快速、精确测量应用数字相关法精确确定超声信号的传播时间。
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 说明压电晶体的特性和与压电晶体的共振频率有关的因数,以及脉波回波法的过程。
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 摘要隧道衬砌、路道、路面楼板等只有一个检测面,冲击回波法成为新的厚度及缺陷检测方法。