The levels of chromosomal aberration and free radical scavenge system were determined in 58 patients with vitiligo.
对58例白癜风患者同时进行染色体畸变和自由基清除系统水平的测定。
C. Blow-back through the scavenge air ports, owing to an incorrectly adjusted exhaust cam disc or large resistance in the exhaust system(back pressure not exceed 300 mm wc)
由于排汽凸轮盘不正确的定时或排汽系统背压过大（背压不能超过300毫米水柱）而导致燃气通过扫气口倒流。
To scavenge excess ROS and reduce its toxic effects, plants have evolved an antioxidant system whose activity is up-regulated under stressful conditions and correlated well with enhanced tolerance.
ROS本身化学性质十分活泼，对植物具有严重的伤害作用。为了降低伤害，植物体在长期的进化过程中形成了酶促与非酶促等抗氧化系统。
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