She began to menstruate regularly at 13 at intervals of 28～32 days with slight dysmenorrheal.她于13岁开始有正常的月经,周期为28～32天,有轻度的月经痛.Lean hard-training women athletes may menstruate less frequently or not at all.身材瘦削而且训练艰苦的女运动员行...
She began to menstruate regularly at 13 at intervals of 28～32 days with slight dysmenorrheal.她于13岁开始有正常的月经,周期为28～32天,有轻度的月经痛.She began to menstruate regularly at 13 at intervals of 28~32 days with slight dysmenorrheal.她于...
The number of cationic bromine and chlorine compounds is restricted.溴、氯阳离子化合物的数量受局限.Derivatives of bromine are much more active than the corresponding one of chlorine.溴的衍生物的活性要比相应的氯的衍生物大得多.The existing bromine in acetic ...
Objective : To improve teaching quality in clinical practice by normalizing ward inspection in clinical teaching.目的: 通过规范临床教学查房来提高实践教学质量.After fifteen years of teaching, he was seconded to the Ministry of Education to ad...