春秋季生物量及栖息密度等值线分布趋势无明显变化。
There were no clear differences in density or distribution of the macrobenthos between spring and fall.
生物等效是指将化学等值的药品以同样的给药方案给予同一个体，在血液和组织中出现相等的浓度。
Bioequivalence refers to chemical equivalents that, when administered to the same person in the same dosage regimen, result in equivalent concentrations of drug in blood and tissues.
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