查询词典 echometer

Changes of liquid level are usually monitored with echometer s and stable decompression is achieved by controlling the reducing rate of the liquid level.

通常用回声仪来监测环空液面变化，通过控制液面下降速度来实现稳定降压。

The echometer was used to monitor the change of the annular water level in the coal- bed methanewells production,which could decrease pressure stably and continuously.

在煤层气井排采过程中，通常用回声仪来监测环空液面变化，通过控制液面下降速度来实现稳定、连续降压。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。