To read the punched cards into the computer requires a card reader instead of the tape reader . 要把穿孔卡写入计算机，就需用卡片输入机来取代纸带输入机。
The dangerous type chronic otitis media occurs with pars flaccida and marginal perforations . 慢性中耳炎的危险型可出现鼓膜松弛部的穿孔和鼓膜边缘性穿孔。
Involvement of the small bowel by primary or metastic neoplasms may occasionally be followed by perforation . 原发性或转移性肿瘤累及小肠也偶可继发穿孔。
Punching errors are easily changed in this system because it may just be one card which is wrong . 在这种系统中，穿孔错误是容易改正的，因为可能只是一张卡片的错。
The complications of duodenal ulcer that require surgical management are hemorrhage, perforation, obstruction, and intractability . 十二指肠溃疡需外科治疗的并发症是出血、穿孔、梗阻和顽固性。
Fine strands of cytoplasm, the plasmodesmata, extend through these pores, connecting sieve-tube cells that lie side by side . 细胞质细丝即胞间连丝通过这些侧壁上的穿孔而延伸，以连接并列的筛管细胞。
About 15 to 20 percent of patients who require treatment for perforation or bleeding will not have an antecedent history of ulcer pain . 为出血或穿孔而需治疗的病人中，约1520以往无溃疡疼痛的病史。
What can pierce one ' s ears without a hole 什么东西不用打洞就可以在耳朵上穿孔？
Thoroughly clean surface of tube around puncture 彻底清洁内胎穿孔周围的表面。
Surgical diagnosis and treatment of perforated gastric cancer 胃癌穿孔的外科诊治
