high-grade rock 中文意思是什麼
high-grade rock
解釋
高級變質巖-
Abstract : to the principle and project that tu guangazhi proposed in 1990, the gold ore deposits in qinling ( shaanxi ) may be classified into fouowing types : archean high - grade gneiss type, fine grained fragmental rock - carbonate rock - silicilith type, metamorphic fragmental rock type, volcanic rock type, explosive breccia type, intrusive rock exo - and endo - contact zone type. inthis paper, the geological characteristics, metallogenic geological setting, the source of ore - forming materials, digenic mechanism and metallogenetic epoch of gold ore deposits are also discussed
文摘:參照塗光熾先生（ 1990 ）提出的礦床類型劃分原則與金礦分類方案，將陜西秦嶺地區原生金礦劃分為太古界綠巖建造型、細碎屑巖-碳酸鹽巖-硅質巖建造型、變質碎屑巖型、火山巖建造型、隱爆角礫巖型和侵入巖內外接觸型金礦，並對各類型金礦的地質特徵、成礦地質背景、成礦物質來源、礦床形成機制及形成時代等問題進行了論述和討論。 -
But during the construction of high - grade highway, our highway departments have concentrated on the capacity of pitch mixtures and ignored the capacity of the rock materials. the small scale, clutter kinds, high cost and different quality of rock material production lead to the large gap between the standard of our pitch pavement and foreign modern standard
但在高等級公路的建設過程中，我們的公路部門大都將注意力集中於瀝青膠合料的性能上，往往忽視了礦料的性能，加上石材生產規模性差、品種雜、成本高、質量參差不齊等問題，使得我國瀝青路面的建設水平與國外先進水平相比差距較大。 -
In this article we will prove the feasibility of highway construction rock material production base in hubei province from three aspects : economy, technique and finance. then we will researche the management of rock material production base from two points of view : property right dividing and corporate governance. and we hope the production base may improve the capacity of pitch mixture and prolong the pitch pavement life by modern production technics, scientific composing design and high economic income and serve for the construction of high - grade highway in hubei province
本文從經濟、技術和財務三方面論證了建立湖北省公路建設石材生產基地建設方案的可行性，並從產權界定和公司治理結構兩個角度對石材生產基地的運營做了進一步深入的研究，希望以精良的礦料制備、科學的組成設計和較高的經濟收益，來改善瀝青混合料的路用性能，延長瀝青路面的使用壽命，更好地服務于湖北省的高等級公路建設。
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