In adding - acid system : the resistivities of different lithotypes " cp tend towards being constant and equal when weight percentage of aniline exceeds 50 % ; because of the structure difference of different lithotypes, the polymerizing places and processes are different ; the resistivities of vituain / pan and fusain / pan reach the lowest point respectively when ( ntloisiog / an is 0. 6, 1. 0 ; the resistivities of cp decline fast and tend towards being constant along with the reduction of diameter of coal. in not adding - acid system : the resistivities of different lithotypes ' cp decline evenly ; it is found on the crossed experiment of cp, that ( nflsaog / an mole proportion is the most important factor to influence output ratio of cp and the weight percentage of aniline is the most important factor to influence resistivities of cp. according to the result of the crossed experiment of cp
在有外加酸體系中:苯胺百分含量大於50時,不同
煤巖組分的電阻率趨于恆定和一致;由於不同
煤巖組分結構上的差異,導致苯胺聚合場所和聚合過程的不同;當過硫酸銨/苯胺摩爾比為0 . 6 , 1 . 0時,鏡
煤-聚苯胺導電材料電阻率和
絲炭-聚苯胺導電材料的電阻率分別達到最低值;在無外加酸體系中:不同
煤巖組分/聚苯胺導電材料的電阻率隨著聚合時間的增加而均勻下降,並在8小時左右達到恆定;在對
絲炭-聚苯胺導電材料進行的正交試驗中發現:過硫酸銨/苯胺摩爾比對產率的影響最大,苯胺重量百分比對產率影響最小,而對產物電阻率影響最大的是苯胺重量百分比。
Underground mine rope haulage monorail transport system
煤礦井下鋼
絲繩牽引單軌吊車
Probing into calculation methods of safety factor of hoisting cable for coal mine
煤礦提升用鋼
絲繩安全系數計算方法的探討
Mining equipment. high tensile steel chains round link for chain conveyors and coal plough. specifications. acceptance testing
採
煤設備.經鏈板輸送機用高抗拉強度圓鋼
絲鏈環的校準鏈.規范.驗收條件
Colliery wire rope
煤礦用鋼
絲繩
In order to avoid gas blast because of short circuit, it should popularize shielded mine cable under coal mine. except insulated surface of part products adopting tinnint brass wires and nylon wires, its protective shield adopting conducting rubber and shielded layer which transition resistance not bigger than 3k. the protective layer adopt high machinery chloroprene rubber which is fireproof
為防止電纜相間短路而造成瓦斯氣體爆炸,在
煤礦井下應大力推廣使用屏蔽礦用電纜,除部分產品的絕緣表面採用鍍錫銅
絲和尼
絲交叉紡織之外,其外屏蔽型電纜的保護屏蔽採用導電橡皮及屏蔽層,其屏蔽層的過渡電阻不大於
Part three raiders a game. crocodile left switches, oven gas bottle left in the switch, middle banana on the first rocket, the lower left - hand corner of machinery, machine screws below, the alligator left switch, gas bottle switch, the tail of a rocket, fired right lower antenna first
第三集游戲攻略1 .鱷魚左邊的開關3次,烤爐左邊的
煤氣瓶開關,中間的香蕉放在火箭頭處,左下角的機器,機器下面的螺
絲,鱷魚左邊的開關,
煤氣瓶開關,火箭尾部,右下天線發射頭。
Kath was drying her hair at the gas-fire.
凱
絲正在
煤氣火爐前面烘著她的頭發。
Coal mine equipment. flame retardation conveyor belts with steel cord for underground and for above ground. specifications
採
煤設備.井下和井上用鋼
絲簾線胎體防火輸送帶.規范
Fouriertransformation infro - red microspectroscopy micro - ftir technique was used to investigate the chemical compositions and structures of cutinite, vitrinite and fusinite from jurassic coals in tarim basin at different temperatures. the results show that the chemical structure of cutinite is mainly composed of long aliphatic - side chain with minor amounts of aromatic compounds. vitrinite is mostly composed of aromatic compounds, in addition to large amount of short aliphatic - side chain compounds. whereas fusinite are dominant by aromatic structure. the study indicates that cutinite is one of the best oil source - rocks, with the higher hydrocarbon - generation potential ; vitrinite is one of better gas source - rocks, and has medium hydrocarbon - generating potential ; fusinite has little hydrocarbon - generating potential. in addition, the components of aliphatic structures of cutinite, vitrinite and fusinite decrease, the aromatics are enriched and condensation of aromatic structure increases with increasing the temperature, and along with the rise of temperatures, the intensity of aliphatic structure and heteroatomic compounds decrease obviously, however the aromatic structure changes a little
應用顯微紅外光譜技術,對塔里木盆地侏羅紀
煤中有代表性的3種組分角質體鏡質體
絲質體在不同熱模擬溫度下的結構組成變化特徵進行了研究,結果表明:角質體結構組成中含有較豐富的長鏈脂族結構,而芳香結構和含氧官能團的含量則相對較少與此相反,
絲質體結構組成中芳香烴占絕對優勢,而脂族結構含量則很少鏡質體結構組成介於角質體和
絲質體之間,含有較多的短鏈脂族結構和芳香結構。
Abstract : taking single - rope drum wind as analysing object, the paper analyses safety coefficient of main rope using the dynamic state method under speed up, constant the speed, reduce the speed and emergency braking, change law is gotten comparing them with " mine safety standards ", points out existing problems and solving methods of safety coefficient in selecting and using rope in home
文摘:以立井單繩纏繞式提升機為研究對象,從動態方面分析提升鋼
絲繩安全系數,得出其在加速、等速、減速、緊急制動狀態下的變化規律,與我國《
煤礦安全規程》的要求進行比較,指出目前國內選擇和使用提升鋼
絲繩在安全系數方面存在的問題和解決辦法。
Steelcord conveyor belts for use in underground coal mining ; belt joints ; dimensions, requirements
地下
煤礦用鋼
絲繩傳送帶.傳送帶的帶接尺寸要求
Mining equipment. round link type chain universel connectors for calibrated chains. specifications. acceptance testing
採
煤設備.經通用連接鏈環用圓鋼
絲校準鏈
Impact of the disaster of mine water inrush on the rubber belt conveyor with wire rope core and its renewal
煤礦透水災害對鋼
絲繩芯膠帶運輸機的影響及恢復
The gas-jets flared noisily, throwing ugly lights on the people, sailors, shopkeepers and farm hands.
煤氣噴口
絲絲地冒出火焰,把令人難受的光線撒向聽眾--水手們,商店老闆們和農場工人們。
The gas - jets flared noisily, throwing ugly lights on the people, sailors, shopkeepers and farm hands
煤氣噴口
絲絲地冒出火焰,把令人難受的光線撒向聽眾- -水手們,商店老闆們和農場工人們。
Delivery requirements of wire ropes for mine hoisting
煤礦重要用途鋼
絲繩驗收技術條件
Adjustable resistor, potentiometer, plastic parts, silk - screen parts, loudhailer, multimedia sound box
1 )可調電阻、電位器、塑膠零件、絲印零件、揚聲器、多煤體音箱