Oil concoction的意思|示意

In at least one human study, a sage-oil concoction improved the mood of participants, increasing their alertness, calmness, and contentedness.

至少有一项针对人的研究中鼠尾草调和油可改善参与者的心情增强他们的机敏度、冷静度和满足感。

According to the demands of the market, high quality reconciliation oil made from concoction of coal-tar oil and heavy-oil was also studied.

根据市场的需求，本文还研究了由煤焦油与重油调配成品质较高的合成燃料油。