The time of X-ray exposure, the amount of contrast media consumed, the TIMI grading after stenting and ST-segment changes of electrocardiogram were compared between two groups.
比较两组介入治疗时平均X线曝光时间、造影剂用量、术后TIMI血流分级和心电图ST段变化。
The group said that parents should limit 'total entertainment screen time to less than one to two hours per day, and' discourage screen media exposure 'generally to kids under the age of two.
该学会称，父母应该将每天孩子的屏幕娱乐时间限制在1 -2个小时以下，并建议不要让两岁以下儿童接触带屏媒体。
UV disinfection rate determined by two factors: (1) UV intensity (2) exposure time.
紫外线的杀菌率决定于两个因素：(1)紫外线强度(2)照射时间。
UV disinfection rate determined by two factors: (1) UV intensity (2) exposure time.
紫外线的杀菌率决定于两个因素：(1)紫外线强度(2)照射时间。
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