- coal dust test
- 煤尘试验
English-Chinese dictionary of mining (英汉矿业大词典). 2013.
English-Chinese dictionary of mining (英汉矿业大词典). 2013.
Dust — For other uses, see Dust (disambiguation). A dust storm blankets Texas homes, in 1935. Dust consists of particles in the atmosphere that arise from various sources such as soil dust lifted up by wind (an Aeolian process), volcanic eruptions, and… … Wikipedia
coal utilization — Introduction combustion of coal or its conversion into useful solid, gaseous, and liquid products. By far the most important use of coal is in combustion, mainly to provide heat to the boilers of electric power plants. Metallurgical coke… … Universalium
History of coal mining — Due to its abundance, coal has been mined in various parts of the world throughout history and continues to be an important economic activity today. Compared to wood fuels, coal yields a higher amount of energy per mass and could be obtained in… … Wikipedia
USS West Alsek (ID-3119) — was a cargo ship in the United States Navy during World War I. She had been built as SS West Alsek for the United States Shipping Board (USSB) as part of the West boats, cargo ships built on the West Coast of the United States. She sailed on two… … Wikipedia
Sago Mine disaster — wikinewshas|three articles on the accident * * *The Sago Mine disaster was a coal mine explosion on January 2, 2006, in the Sago Mine (pronEng|ˈseɪgoʊ) in Sago, West Virginia, USA near the Upshur County seat of Buckhannon. The blast and ensuing… … Wikipedia
Mine Safety and Health Administration — Agency overview Formed 1977 Jurisdiction Federal government of th … Wikipedia
agricultural technology — Introduction application of techniques to control the growth and harvesting of animal and vegetable products. Soil preparation Mechanical processing of soil so that it is in the proper physical condition for planting is usually… … Universalium
Panspermia — (Greek: πανσπερμία from πᾶς/πᾶν (pas/pan) all and σπέρμα (sperma) seed ) is the hypothesis that life exists throughout the Universe, distributed by meteoroids, asteroids and planetoids.[1] Panspermia proposes tha … Wikipedia
2-8-4 — In the Whyte notation, a 2 8 4 is a railroad steam locomotive that has one unpowered leading axle followed by four powered driving axles and two unpowered trailing axles. This locomotive type is most often referred to as a Berkshire, though the… … Wikipedia
animal disease — ▪ non human Introduction an impairment of the normal state of an animal that interrupts or modifies its vital functions. Concern with diseases that afflict animals dates from the earliest human contacts with animals and is reflected… … Universalium
SR Merchant Navy class — SR Merchant Navy class[1] Official Southern Railway photograph of 21C1 Channe … Wikipedia