high-grade oil

基本解釋

High-grade oil well pipes project will bring dual upgrade: capacity bottleneck remove and products mix upgrade.
安徽天大的高鋼級油井管生產(chǎn)線的建成將帶來雙層升級：產(chǎn)能瓶頸的突破和產(chǎn)品檔次的升級。
The product is made from hydroxy fatty acids lithium soap thickening high-grade basic oil and high-performance additive.
本產(chǎn)品由羥基脂肪酸鋰皂稠化高級基礎(chǔ)油并加入高效添加劑制成，是城市地鐵輪軌的專用潤滑脂。
The factors influencing the quality of high-grade oil in production are introduced. Its quality controlling methods are given.
介紹了在實(shí)際生產(chǎn)過程中影響一級油質(zhì)量的因素，并提出了相應(yīng)的控制方法。

Recent bidding rounds have attracted lucrative offers from scores of foreign firms, not surprising since Libyan oil tends to be high-grade and cheap to produce, and only a quarter of the country has been explored.
ECONOMIST: Libya