查询词典 coal

In eighteen thirty-five, a barrel of flour cost six dollars. Two years later, the price had jumped to more than twelve dollars. The same was true with meat and other foods. Even coal, the fuel people used to heat their homes, cost twice as much.

在1835年，一桶面粉只需6美元，两年后，这一价格上涨到12美元以上，同样，肉制品和其他食品的价格也大幅度上涨，即便是煤，这是人们用于取暖所用的燃料，其价格也上涨了两倍多。

It is widely used in building material, metallurgy, light chemical and feed industries etc to feed or transport cement, powder coal and flour of milling and stove.

该输送装置广泛适用于建材、冶金、轻化、粮食等行业中水泥成品、水泥生料、粉煤灰、面粉以及磨机、选粉机和窑的喂料等输送。

All of these provide scientific basis for development of the novel cyclone. At last, according to the thorough study of gas-solid process, The cyclone shape and size are improved, and the cyclone performances are taken better. The technique of cyclone with down-flow is updated, and applied in CFB boilers, retrofitting old boilers, CFB pulverized-coal gasifier, flue gas cleaner, and so on. The successful operation of 75T/h CFB boiler indicts that the novel technique tends to ripe.

最后，根据对气固分离过程的深入研究，对下排气旋风分离器进行了结构改进与性能完善，实现了下排气旋风分离技术的升级换代，并将技术成果成功应用于下排气循环床锅炉、旧锅炉改造、流化床煤粉气化炉及烟气除尘净化等方面。75T/h下排气循环床锅炉的成功运行表明下排气旋风分离技术已趋成熟，发展前景广阔。

Composition and radioactivity of natural radioactive nuclides of dry and wet fly ash in eight coal-fired powder plants in Sichuan province and Chong Qing city were detected, meanwhile the related synthetic utilization situations were investigated.

对四川省8个大、中型火力发电厂排出的干/湿粉煤灰中天然放射性核素的组成和含量进行了测定和分析；并调查了我省粉煤灰的综合利用情况。

Coal-burning power plants spend millions of dollars disposing of waste fly ash, a fine powder that contains some toxic chemicals (whose quantities are very low and usually much below the limits of tolerance set up by national standards).

煤力发电站花费巨大的资金在处理废弃飞尘上，这些飞尘通常含有一些有毒的化学物质，但这些有毒物质含量却非常的低，通常是大大低于国家设立的标准的。

This machine can use a variety of fly ash, coal stone, sand, slag, governance, and various micro-smelting slag slag as the main raw material.

本机可利用多种粉煤灰，煤矿石、河沙、石渣、治炼渣和各种微矿渣作主要原料。

The machine can use a variety of fly ash, coal mines stone, sand, carbide, governance refining residue and various micro-slag as raw material.

本机可利用多种粉煤灰，煤矿石、河沙、石渣、治炼渣和各种微矿渣作主要原料。

At present coal is the most common food of a steam plant.

目前，煤是蒸汽动力厂的最常用的能源。

At present coal is the most common food of a steam plant.

目前，煤是火力电厂最常用的能源。

The fossil fuels, coal, oil and natural gas, are rapidly diminishing in supply as consumption increases.

矿物燃料，煤、石油和天然气，由于消费的增加而在快速的递减着。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。