煤灰

Before midnight, including the custom in the Dec. 31 clean rooms in an era of widespread burning coal, burning of coal ash dump was also there is a superstition that must be in before the clock struck midnight to clear all debts.

午夜之前的习俗包括在12月31日打扫房间在普遍烧煤的时代，倾倒烧尽的煤灰另外还存在一种迷信，就是必须在午夜钟声敲响之前清偿所有的债务。

This paper describes a novel on-line coal dust detection method.

本文介绍一种新的在线检测方法的煤灰。

He became ill after breathing coal dust for many years.

他因多年的吸进煤灰而生病了。

He became ill after breathing coal dust for many years.

他因多年的吸进煤灰而生病了。不适合

He became ill after breathing coal dust for many years.

他因多年吸入煤灰而生病了。

He fell ill after breathing coal dust for many years.

呼吸了多年煤灰之后，他病倒了。

Federal and state investigators suspect the explosion was caused by a combination of methane gas and combustible coal dust.

联邦和州调查人员怀疑爆炸是甲烷气体和可燃性煤灰混合物引起的。

He was covered from head to toe in coal dust, like a miner coming up from the pit.

他从头到脚全是煤灰，就象一个矿工刚从坑道里出来一样。

A 2006 study found abnormally high levels of chemicals in the benzene family attached to coal dust around Handan.

一项2006年的研究表明，邯郸的空气中含有大量的煤灰，其中苯化合物的含量异常高。

I remembered Dad's hard hat, its carbide lamp showing a fine pall of coal dust.

我想起爸爸的硬壳帽，帽上的碳化灯露出了一层厚厚的煤灰。

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。