Sheets of postage stamps are perforated.
一的邮票都打过接缝。
Sheets of postage stamps are perforated.
一的邮票都打过接缝。
The insufficiency of perforating veins is the main cause resulting in the recurrence of varicose veins after varicotomy in lower extremities.
交通静脉功能不全是导致下肢静脉曲复发的主要原因。
Objective To investigate the changes of blood-ocular barrier and effect of ligustrazine on the ocular endosmosis of intravenous ciprofloxacin in rabbit eyes of corneal perforating injury.
目的研究兔角膜穿伤血-眼屏障的改变及川芎嗪对环在兔眼角膜穿伤眼内渗透性的影响。
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