The qitaihe coal resources isadvantageous, the coal field total area 8, 000 square kilometers, haveverified the geological reserve 1. 7 billion tons, the prospectivereserves 4. 2 billion tons, the coal plant completely, has the cokingcoal, 1 / 3 coking coal, the gas coal, the anthracite and so on 10varieties, by coking coal primarily ; excellent in quality, has theespecially low phosphorus, especially low characteristic and so onsulfur, high heat value, high ash melting point, high silicon content, most is suitable for the coal chemical industry product thedevelopment, is national one of three big protections mining rare coalfields, is the heilongjiang province most important anthraciteproduction base, also is the national important coking coal and thenortheast area biggest high quality coke production base
七臺河煤炭資源得天獨厚,煤田總面積8000平方公里,已探明地質儲量17億噸,遠景儲量42億噸,煤種齊全,有主焦煤、 1 / 3焦煤、氣煤、無
煙煤等10個品種,以主焦煤為主;品質優良,具有特低磷、特低硫、高發熱
值、高灰熔點、高硅含量等特點,最適于煤化工產品的開發,是全國三大保護性開采稀有煤田之一,是黑龍江省最重要的無
煙煤生產基地,也是國家重要的主焦煤和東北地區最大的優質焦炭生產基地。
In a study examining the impact of environmental cigarette smoke on heart blood vessels, japanese researchers found that 30 minutes of exposure to secondhand smoke reduced nonsmokers ' coronary flow velocity reserve ( cfvr ) - - a measure of the speed of blood flow
該研究調查了吸
煙環境對心臟血壓的影響,日本研究人員發現暴露在二手
煙環境三十分鐘可使不吸
煙者冠狀動脈血液流速,這就是血液流速的測量
值降低。
The distribution of fire smoke temperature, concentration, and visibility was analyzed ; and the airflow movement organization of the shallow embedded island platform during fire was studied
針對地鐵淺埋島式站臺列車火災情況,利用數
值模擬場模擬方法,研究淺埋島式站點內
煙氣橫向流動和不同站層間的
煙氣縱向蔓延規律。
They had never been worn, my mother said. under that, the miscellany began - a quadrant, a tin canikin, several sticks of tobacco, two brace of very handsome pistols, a piece of bar silver, an old spanish watch and some other trinkets of little value and mostly of foreign make, a pair of compasses mounted with brass, and five or six curious west indian shells
在那套衣服的下面,開始出現了各式各樣的東西:一個四分儀,一個錫制的小酒杯,幾顆
煙,兩對非常漂亮的手銑,一根銀條,一隻西班牙老懷表,還有其他一些不
值錢的小裝飾品,大多是外國製造的,一副黃銅桿的圓規,還有五六個珍奇的西印度貝殼。
A policeman must not smoke while he is on duty.
警察當班
值勤時不得抽
煙。
This article aims at the boiler ' s problems in operation : 1 ) under nominal load, the smoke temperature at the outlet of hearth reaches 1200, far more exceeds 1050 the original designed temperature. this will always result in slag inside boiler and the temperature of overheater ' s pipe superheat, so that boiler cannot take nominal load and all these influence boiler ' s nomal operation heavily, 2 ) this article also studied the reason why the assistant oil becoming necessary when coal changes. during the nomal operation, many factors ( makeup of combustor and its disposal, smirch and encrust of water wall, excessive air coefficient, temperature of primary air, coal type and density of coal dust ) can deviate the designed working conditions, then affect the boiler ' s nomal operation
本文針對該鍋爐在實際運行中存在的問題:在額定負荷下,爐膛出口超溫、低溫段過熱器前
煙溫高達936 ,遠遠超過815的設計
值;噴燃器四周水冷壁結焦嚴重,過熱器管壁溫度超標,無法帶上額定負荷;甚至有時因燃煤質量的變化,必須投油助燃的嚴重情況進行了分析研究。在實際生產過程中,燃燒器的結構、布置,水冷壁的粘污、結垢,過剩空氣系數、一次風溫、煤種及其濃度變化等許多因素都會偏離鍋爐的設計工況,從而影響爐內的傳熱和燃燒,造成爐膛出口超溫、水冷壁結渣等問題。
Either way, just like the cheapest old stogie, it ' ll be up in smoke
這種香
煙每支價
值440美元,據說是純手工製作而成。
Numerical simulation of smoke control in subway fire
地鐵火災
煙氣控制的數
值模擬
Numerical simulation on smoke control schemes of underground railway stations
地鐵車站火災
煙控模式的數
值模擬
Analysis of experimental data indicates that there exist several following problems during the whole operation : first, the emission is serious and the density of hc and co smoke is very high at on and off period. second, there is oil dripping from the dripping vitta as a result of the fault of ignition system and combustion structure. the last, there might be accidents of disabled ignition resulted from the improper operation at the beginning
通過對樣機的試驗分析和研究表明,汽車空氣燃油加熱器在整個工作過程中,其排放存在以下三個問題:一、開機和關機兩個階段的排放問題嚴重,廢氣中hc和co的濃度
值及
煙度測量
值都很高;二、因點火系統和燃燒結構的缺陷而導致開機后一段時間內有油滴從滴油管滴落;三、在點火過程中,會出現因操作不當而點火失效的現象。
Which bring up a conclusion that the zoon model is not agree with the facts of fire experiment, hence the field model or the combined model is better for the simulation of fires in a large volume building
本文結合火災相似模型實驗研究,對中庭建築火災過程進行了數
值模擬研究,建立了火區燃燒及蔓延過程與
煙氣流動過程相互耦合的氣-固兩相火災模型。
Detected resistance ratios of the adults in bemisia tabaci to imidacloprid, acetamiprid and thiamethoxam were respectively 1. 22, 3. 28 and 2. 49 by using adult leaf - dip bioassay, and 1. 37, 4. 27 and 3. 26 by using systemic bioassay, which showed the same resistant level detected by two bioassay methods
摘要採用浸葉法和內吸法測得的
煙粉虱成蟲對吡蟲啉、啶蟲脒和噻蟲嗪的抗性比
值分別為1 . 22 、 3 . 28 、 2 . 49和1 . 37 、 4 . 27 、 3 . 26 , 2種方法測定的結果基本一致。
Abstract : to account some difficult problems in theoretical calculation of blasting demolition of buildings, the criterion for disintegration of brick - concrete structures, blasting height of frame structure, counteracting force of supports are analyzed. a numerical simulation is demonstrated for structure ' s destabilization and dilapidation in the process of blasting demolition of buildings such as chimney and bridge, which services a guide for theoretical study and practice of blasting demolition of buildings
文摘:針對建築物爆破拆除理論計算難以把握的幾個問題,如磚混結構解體的判據,框架結構建築的爆高、支座反力,以及框架結構失穩和
煙囪、橋梁爆破拆除倒塌過程的數
值模擬方法,進行了分析和說明,為建築物爆破拆除設計理論研究與施工提供了參考依據。
Dengta lei ming celebrate instrument factory founded in 2000 and located tujia country yantai street in dengta city. now we have five manager and forty - two technical personnel and also produce control become deformed salute 1200men. the fix assets 150 million yuan and output value 360 million yuan, it is only produting celebration salute of professional factory in our country
燈塔市雷鳴慶典器械廠創建於2000年,位於燈塔市煙臺街道土佳屯村,現有管理人員5名,技術工人42人,固定資產150萬元,年生產遙控變形禮炮1200門,產值360萬元,是國內唯一大型生產慶典禮炮的專業廠家。