natural asphalt

基本解釋

Natural asphalt storage in underground, some forming seam or piled up in the earth's crust surface.
天然瀝青儲藏在地下，有的形成鑛層或在地殼表麪堆積。
A new type anti-track RS2000 natural asphalt modifier was introduced. Chemical components of the modifier were analyzed.
介紹了一種新型RS2000抗車轍瀝青改性劑，分析了該改性劑的化學(xué)組成。
It is not favorable area to find gas field in the area, which the natural asphalt commonly occurs and oil and gas seepage and extensional fracture are developed.
但在廣泛古生界地層裸露區(qū)，特別是碳酸巖發(fā)育的地帶，普遍見天然瀝青、油氣苗及張性斷裂，是找油氣的不利區(qū)域。

天然瀝青
Natural asphalt is a kind of excellent modifier to improve road asphalt. It can effectively improve the road performance of the asphalt materials.
天然瀝青是一種優(yōu)質(zhì)的路用瀝青改性外摻劑,能有傚地改善瀝青材料的路用性能。
材料科學(xué)
天然瀝青