在原料脱臭馏出物预处理后，以甲醇钠为碱催化剂，将原料与甲醇进行反应，使原料中的甾醇酯转化为游离甾醇。
After the pretreatment of PODD, sterol ester in PODD can be transesterified into free sterol with methanol while methanolic sodium as catalyst.
具有游离气顶的油藏。气顶供给驱扫能量，使油经储层岩石流入井内。
An oil reservoir with a free gas cap that supplies the energy to sweep the oil through the reservoir rock into the Wells.
以较小量外源性胆固醇使肝游离胆固醇含量轻度升高，能明显抑制内源性胆固醇的合成。
When the free cholesterol content of the liver was slightly elevated by a small increase of dietary cholesterol, the rate of cholesterol synthesis decreased sharply in the liver of control animals.
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