堆积厚度 meaning in English

ulking thickness

These researches provide us a basis for forecasting the pests in grain in earlier stage , accurately utilizing pesticides , improving the efficiency of prevention and reducing the loss of stored grain . the sound absorption properties of various types and thickness of grain are measured by means of the standing wave tube technique . the following conclusions can be drawn : for the same thickness the larger grains has a smaller sound absorption coefficient than the smaller grains
为了有效地研究储粮害虫所产生声信号在各种粮食中的传播特性，本文采用驻波管法，对十一种不同种类粮食在不同堆积厚度情况下的吸声性能进行了实验研究，粮食吸声特性与其颗粒的大小、形状、排列方式及粮食堆积厚度等有关，存在一定的规律，得出如下结论：同一厚度下，颗粒大的粮食较颗粒小的吸声性能差，颗粒由大到小，吸声系数峰值频率向低频方向移动；球形颗粒粮食较长形颗粒吸声性能差。