Process of drug movement from the administration site to the systemic circulation.

吸收是指药物由用药部位进入体循环的转运过程.

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Bioavailability expresses the extent of drug absorption into the systemic circulation.

生物利用度表示药物吸收进入体循环的分量.

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Agriculture should participate in world market systemic circulation to must change backward face western.

西部农业要参与世界市场大循环就必须改变落后面貌.

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Concept: The fraction of unchanged drug reaching systemic circulation following administration by any route.

经任何给药途径给予一定剂量的药物后到达全身血循环内药物的百分率.

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It is directly proportional to the total amount of unchanged drug that reaches the systemic circulation.

它直接与到达体循环的原形总药量成正比.

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After a drug enters the systemic circulation , it is distributed to the body's tissues.

药物进入体循环后分布于机体各组织.

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