发嗡嗡声的

It was the hour of study; they were engaged in conning over their to- morrow's task, and the hum I had heard was the combined result of their whispered repetitions.

那正是学习时间，他们正忙于默记第二天的功课，我所听的的嗡嗡之声，正是集体小声读书所发出来的。

When the bell rang, a nasal buzzing sound, a gangly boy with skin to me.

下课铃响了——发出一阵刺耳的嗡嗡声，一个瘦长瘦长有皮肤病、头发黑得跟抹了发油似的男生从过道的另一边倾过身来对我说。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。