N cocaine that has been refined by heating it in ether or some other solvent (在乙醚或其它溶剂中加热过的)精炼可卡因 [slang]
V to refine (cocaine) in this way 用乙醚等加热精炼(可卡因)
The free base was purified by distillation.
通过蒸馏提纯未反应的碱。
Objective To study the clearing of hydroxyl free base with lily polysaccharide.
目的研究百合多糖对羟自由基的清除作用。
Acid addition salts are a more convenient form for use; and in practice, use of the salt form inherently amounts to use of the free base form.
酸式盐是一种更便于使用的形式；在实际应用中，使用盐形式与使用游离碱形式的量相等。
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