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08:39 Apr 7, 2020 |
English to Russian translations [PRO] Tech/Engineering - Mining & Minerals / Gems | |||||||
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| Selected response from: Enote Local time: 21:45 | ||||||
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Summary of answers provided | ||||
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3 +1 | (глубина) устойчивой породы (верхнего слоя крепкой породы) в поперечном сечении входа в шахту |
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(глубина) устойчивой породы (верхнего слоя крепкой породы) в поперечном сечении входа в шахту Explanation: competent ground (rock) - это выдерживающая нагрузку/устойчивая порода, определение из глоссария угольщиков http://www.coaleducation.org/glossary.htm Competent rock - Rock which, because of its physical and geological characteristics, is capable of sustaining openings without any structural support except pillars and walls left during mining (stalls, light props, and roof bolts are not considered structural support). rock-head - это верхний слой крепкой породы под слоем почвы (грунта), определение из Википедии https://en.wiktionary.org/wiki/rockhead rockhead (plural rockheads) (geology) The surface of the bedrock beneath soil cover. |
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