“Hirschback method”的概念、定义、翻译、参考文献-科学参考

单词	Hirschback method
释义	Hirschback method [`hǝrsh´bak ´meth·ǝd] ^{MINING ENGINEERING} A method for draining firedamp from coal seams by means of superjacent entries located 80-138 feet (24-42 meters) above the seams and supplemented by boreholes drilled at right angles to the entry walls. Also known as superjacent roadway system.
随便看	oil of turpentine oil of vitriol oil paint oil painting oil pool oil pump oil reclaiming oil reservoir oil-reservoir water oil ring Fagergren cell Fagersta cut fagopyrism fahlband fahlore Fahnestock clip Fahrenheit scale Fahrenheit's hydrometer Fahrenholz's rule failed hole fail-safe system failsafe tape fail soft fail-soft system failure

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