Thus, the PFR was optimal for immobilized cells to produce L-malic acid in ammonium fumarate system.

因此，在富马酸铵体系中用固定化酶生产L-苹果酸采用填充床反应器更佳。

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The ejection fraction (EF) and peak filling rate (PFR) were decreased and the time of peak filling rate (TPFR) was prolonged.

冠心病组射血分数、峰值充盈率减少，峰值充盈时间延长。

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Plug flow reactor(PFR) and Continuous stirred tank reactor(CSTR) were studied to compare their performance for treating dairy manure.

对推流式反应器（PFR）和完全混合式反应器（CSTR）用于牛粪液厌氧消化的性能进行了比较研究。

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