硬岩层的英文

• shelly formation

• "硬"英文翻译    hard; stiff; tough
• "岩层"英文翻译    rock formation; stratum; roc ...
• "坚硬岩层" 英文翻译 :    competent bed; hard formation; sharp ground
• "硬岩层钻井" 英文翻译 :    hard-rock drilling
• "中硬岩层" 英文翻译 :    medium ground
• "硬岩层中钻进" 英文翻译 :    rough drilling
• "表土下硬岩层的顶部" 英文翻译 :    rock head
• "硬岩" 英文翻译 :    hard rock; hard stone; hardrock
• "岩层" 英文翻译 :    [地] rock formation; stratum; rock stratum
• "岩，硬岩" 英文翻译 :    graywacke
• "硬岩礁" 英文翻译 :    klint
• "硬岩矿" 英文翻译 :    hard-rock mine
• "硬岩盘" 英文翻译 :    hardpan
• "硬岩石" 英文翻译 :    hard rock; hardrock; kingle; metal; rag
• "杂岩，硬岩" 英文翻译 :    graywacke
• "半坚硬岩石" 英文翻译 :    semi-hard rock
• "粗硬岩石" 英文翻译 :    lagstone
• "坚硬岩石" 英文翻译 :    competent rock; hard rock; sound rock
• "硬岩采石场" 英文翻译 :    hard rock quarry
• "硬岩地质学" 英文翻译 :    hard-rock geology
• "硬岩粉末" 英文翻译 :    hard rock flour
• "硬岩粉土" 英文翻译 :    alphitolite
• "硬岩掘进工" 英文翻译 :    hard-heading man
• "硬岩开采" 英文翻译 :    hard rock mining
• "硬岩开采机" 英文翻译 :    hard rock miner

• Soft - medium hard rock formation
  软-中硬岩层
• Wedge hob drill head is applicable for medium harden rock layer , coarse grain granite , and it has below 9 - grade drillability . the compressive strength is no more than 10 of pull coefficient
  楔齿滚刀钻头适合于中硬岩层，粗晶花岗岩，可钻性9级以下，抗压强度在普氏系数10 。
• Drill efficiency could be promoted sharply in penetration of high - medium hard sand rock rock formation . its wings are of higher wear resistance and impact efficiency . to repeat repair grind are not necessary
  大幅提高中硬岩层砂岩的钻进效率,刀翼耐磨抗冲击性强,不需反复修磨,钻头寿命长。
• The present situation of many areas lack water seriously in china and execution of strategy of national geology survey makes it become urgent assignment that how to drill soft - middle hard rock rapidly and with high efficiency encountered frequently in drought and water - scarce area
  摘要中国许多地区严重缺水的现状及国家地质大调查战略的实施，使得如何快速、高效钻进干旱缺水地区大量遇到的软中硬岩层成为当务之急。