煤鉆 的英文怎麼說
中文拼音 [méizhēn]
煤鉆
英文
coal auger-
Study of development coalbed methane using air drilling technology in jincheng area
用空氣鉆井開發晉城煤層氣技術研究Grading of raise boring machine quality for coal mine
煤礦用反井鉆機產品質量分等Drill bit for coal cutting
電煤鉆頭Construction technique of deep - drill of outburst coal seam
突出煤層深鉆孔施工技術Development and application of columnar diagram in coalfield drilling
煤田鉆孔柱狀圖軟體的開發與應用Drilling technology of long hole using for discharging gas from coal seams
抽放瓦斯順煤層長鉆孔施工技術Applications on the dooryard drilling machine in the coal mine production
天井鉆機在煤礦生產中的應用To educate men so that this piece of coal may become a diamond and this fruitless tree may be engrafted and yield the sweetest most delicious fruits
教育人使煤炭變成鉆石。對不結果的樹進行嫁接，結出甘甜的果實。Probe into features of drilling fluid in coalbed gas well
煤層氣井鉆井液特點的探討The workman accidentally drilled a hole in the gas main
那個技工意外地在煤氣總管上鉆了一個洞。Gas offtake borehole
煤氣泄出鉆孔It is determined by the characteristics of chinese coal seams that they are difficult to exploit ; this paper analyzes three main stimulation technologies : hydraulic fracturing, displacement of multi - gas and oriented pinnate horizontal well - drilling, which can provide technical guidance for developing coal - bed gas more efficiently and reasonably
此外還分析了目前國內外煤層氣增產的3項主要技術：水力壓裂改造技術、煤中多元氣體驅替技術和定向羽狀水平鉆井技術。We developed the power system of electric drill based on dc - ac. the system use the technique of spwm frequency cowersation control. it changed th d. c provided by trolly wire of d. c motor into stable a. c adopted igbt and driving circuit adopted high speed module of exb840
針對當前我國煤礦電鉆電源的使用現狀，提出研製dc - ac變換的電鉆電源系統，該電源系統直接利用spwm變頻控制技術，將井下直流電機車的架空線所提供的直流電轉變成頻率是50hz的1 . 27v的穩定交流電。Several problem influenced drilling and completion of well technology for coal bed methane
影響煤層氣鉆井完井工藝技術的幾個問題New electric leakage protection device of electric coal drill
一種新型的煤電鉆漏電保護裝置Problems and countermeasures of electric coal drill comprehensive device
煤電鉆綜合裝置的問題及對策Flameproof hand - held electric coal drill
隔爆型手持式煤電鉆Flame - proof rapid interruption geb for underground coal drills
煤礦用隔爆型快速斷電煤電鉆綜合保護裝置Diamond core bit for coal drilling
煤田鉆探金剛石取心鉆頭Development of hydraulic coal driller
液壓煤鉆的研製分享友人