穿孔

In this paper, based on Maa's theory, the theory of micro perforated panel absorber is summarized, a comparison between the calculated result and the testing result for intermediate and lower frequency standing wave tubes is made.

在微穿孔板消声理论的基础上，根据气动马达消声器的实际需要设计了一种微穿孔板消声器，并通过实验对这种消声器的消声特性和流阻进行了研究。

Thirty-two pathological corneal samples were collected from the patients during corneal transplantation, including keratoconus (3 cases), endothelial keratitis (1 case), corneal endothelial decompensation after cataract operation (4 cases), Mooren's ulcer (3 cases), corneal implant opacities (5 cases), herpes simplex viral leucoma (1 case) and perforation (3 cases), trachoma corneal leucoma (1 case), bacterial (1 case) and fungal (1 case) corneal perforation, chemical trauma (5 cases), and burn (2 cases).

32例角膜植片标本来自我院角膜移植取下的病变组织，其中园锥角膜3例；角膜内皮炎1例；白内障术后角膜内皮失代偿4例；蚕食性角膜溃疡3例；角膜植片混浊5例；单疱病毒性白斑1例和单疱病毒性角膜穿孔3例；砂眼角膜白斑1例；细菌性和真菌性角膜穿孔各1例；角膜化学伤5例和热烧伤2例。

Snakebites piercing- composed of two piercings situated on each of the lower lip's side.

蛇咬穿孔的上下唇的各有两个穿孔位于组成。

Objective To observe the morphosis of traumatic tympanic membrane perforation at acute stage and analyze the influencing factors of surgical intervention.

目的 观察外伤性鼓膜穿孔急性期穿孔形态并分析急性期外科干预的影响因素。

Audi offers TT RS customers a diverse range of optional equipment: variably styled wheels measuring 18, 19 or 20 inches in diameter; bucket seats with folding backrests; seat upholstery in Silk Nappa leather with perforations or Fine Nappa leather with special TT perforations; inlays with Ibis White or Phantom Black paint finish as well as matt aluminum-look inlays for the exterior.

奥迪特恏巴提供客户多样化的可选设备范围：variably式车轮测量18，19或20英寸的直径，带有折叠式靠背桶形座椅，座椅的丝绸纳帕与穿孔或细纳帕特别特穿孔皮革皮革装饰，镶嵌的宜必思白色或黑色漆幻影以及亚光铝寻找外部镶嵌。

To add holes to perforated tape to change a character, especially to produce a delete character.

在已穿孔的带上增加穿孔以改变某个字符，尤其是用以产生删除字符。

According to the size and position of perforations of the ear drum, we can select endotoscope or operating microscope and different materials for myringoplasty. For central type of perforations, the application of endotoscope with fat plug or perichondrium is reliable and minimally invasive.

针对不同鼓膜穿孔的特点有选择性地应用手术显微镜或耳内镜技术，以及不同来源的移植材料进行鼓膜成形术，均能达到有效的治疗结果；对中央型的穿孔应用耳内镜下脂肪、软骨膜材料能达到微创目的。

By way of comparison, detection of abscess, extraluminal air, and extraluminal appendicolith was 37.5% sensitive, 22.5% specific, and 32.5% accurate in diagnosing perforation, while identification of phlegmon was 40.0% sensitive, 95.2% specific, and 73.5% accurate in diagnosing appendiceal perforation.

通过对比，诊断阑尾穿孔时，脓肿、外漏气体、阑尾结石的诊断敏感性是37.5%，特异性是22.5%，准确性32.5%，然而诊断阑尾穿孔时阑尾蜂窝织炎的诊断敏感性是40%，特异性是95.2%，准确性73.5

The failure mechanism and service sttaus quo of hot piercer point in seamless steel tube were analyzed and its failure was mainly caused by piercer point collapsing nose, sticking steel and cracking.

对穿无缝钢管热穿孔顶头的失效机制和使用状况进行了分析研究，认为穿孔顶头的失效形式主要表现为顶头塌鼻、粘钢、开裂。

A perforation,as in a punch ed card or paper tape.

在穿孔卡片或纸带上穿孔的一种动作。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。