By the end of the six-month maintenance period, 53 percent of patients with a history of medication resistance and 38 percent of patients without such a history relapsed despite treatment.
在六个月的维持期结束后，尽管有治疗，但是53%的有药物抵制史的患者和38%无此类历史的患者复发。
2
The arc voltage, current, power and resistanceof a nitrogen gliding arc in one period were studied.
以氮气滑动弧为例，分析了其在一个周期内电弧电压、电流、电阻和功率的变化特性。
3
Photosynthetic rate and chlorophyll content of flag leaf declined sharply, and leaf stomatal resistance increased rapidly in late periodof senescence.