ring coal 中文意思是什麼
ring coal
解釋
瀝青炭-
Application of model kjj31 connector of mine - used ring net in coal mine underground
31型礦用環網接入器在煤礦井下的應用 -
Series hs ring - hummer type coal crusher
Hs系列環錘式碎煤機 -
This paper outlines operation, check and repair of the bucket stacker / reclaimer of a coal conveying system used at anqing petrochemical coal - fired power station, describes damage condition of the slewing ring, discusses the causes and details how to replace the damaged slewing ring by synchronously jacking
摘要介紹了安慶石化熱電廠輸煤系統斗輪堆取料機的使用檢修和回轉大軸承的損壞，分析了損壞原因，重點介紹了「頂升法」更換回轉大軸承的技術。 -
Application and selection of water - ring vacuum - compressor pump in methane drainage in coal mine
水環真空壓縮機在礦井瓦斯抽放中的應用和選型 -
The construction of the control ring seal for the coal gas wash pump was improved, the seal function and capacity efficiency of pump was increased adopting the stainless steel cone control ring, the industry stability and economy energy was obtained
摘要對煤氣洗滌泵口環密封結構和材料進行改進，採用圓錐形不銹鋼口環，提高了密封性能和泵容積效率，工業運行穩定，節省了電源。 -
P / a, fl / py ratios and ring numbers of pahs were used to assess the origins of the pollutants, suggesting possible sources such as combustion of coal, wood and petroleum pyrolysis
P / a 、 fl / py比值、 pahs環數以及烷基化pahs表明膠州灣表層沉積物中pahs幾乎全部由人類活動產生，來源為煤炭燃燒、木材燃燒、石油類高溫裂解及油類污染。 -
Heating facilities in haidian are mostly boilers using coal as fuel, now measures are taken to transform coal boilers into gas boilers in the area within the third - ring road. universities and colleges, institutions and government organs usually have heating systems of their own while heating for some of the resident areas is provided by house - and - land management departments or real estate companies of the locality
七、熱力供應海淀區的供熱工程設施主要是供熱鍋爐，基本上以燃煤為主，現正在對三環路以內地區和海淀鎮中關村地區的燃煤鍋爐實施「煤改氣」的改造工程。境內的科研機構、大專院校、軍事機關和一部分企事業單位的供熱基本上是由自己解決，部分住宅小區的供熱由區房屋土地管理局和房地產開發公司負責。 -
Flameproof multifunction lamp - ring signal device for coal machine
煤礦用隔爆型多功能燈鈴信號裝置
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