穿孔性的

Using transfer matrix method to analyze microperforated panel absorber s acoustic characteristic;2. The possibility and the significance of replacing fibred absorption materials by fibreless materials,especially by microperforated panels,are discussed.

简要地介绍了吸声材料的基本特点，阐述了无纤维性吸声材料（特别是微穿孔板吸声结构）取代传统的纤维性吸声材料的可能性及其重要意义，较详细地介绍了近年来德国以及我国科研人员在无纤维吸声材料研究上所取得的进展。

Methods 174 eyes with mycotic corneal ulcer were divided into two groups according to presence or absence of perforation and their prognosis, course of illness, surface area of ulceration, hypopyon, intraocular pressure, microbial spectrum were compared.

回顾性分析近 3年来的 174例真菌性角膜溃疡病例，依据其转归分为穿孔组及未穿孔组，比较两组预后、病程、溃疡面积、前房积脓、眼压及菌种等方面的差异。

There were 10 males and 5 females, ranging in age from 2.5 to 82 years. Results The cause of descending cervical mediastinitis included odontogenic infection, suppurative tonsillitis, suppurative otitis media complicating Mouret abscess, pharyngeal injury by foreign body and esophageal perforation.

结果 颈性下行性纵隔脓肿的原因有：牙源性、急性扁桃体炎引起咽旁脓肿、胆脂瘤型中耳炎并发Mouret脓肿各2例，咽异物擦伤6例，食管穿孔3例。

Emphysematous cholecystitis is a relatively rare variant but rapidly progressive and life threatening form of acute cholecystitis caused by gas-producing organisms. In contrast to acute cholecystitis, emphysematous cholecystitis occurs more commonly in elderly and diabetic patients, and is frequently associated with perforation and death, requiring emergent surgical intervention.

急性气肿性胆囊炎是急性胆囊炎的一种少见的形式，它是由产气性致病菌所感染，疾病进展快速，致死性高，与一般急性胆囊炎不同的是它较常发生於老年人及糖尿病患，也常导致胆囊穿孔及死亡而需紧急手术治疗。

The results suggest that pathogenesis of hepatogenic peptic ulcer is closely related to these factors foresaid.The treatment is nonsurgical and massive hemorrhage or perforation once occurs,surgical treatment is necessary.

本研究结果提示：肝源性消化性溃疡的发病与上述因素密切相关；治疗原则以非手术治疗为主，对止血无效和穿孔者则应行手术治疗。

Results All fifteen cases had a long term history of otitis media, such as otorrhea sanguine

结果 15例患者均有较长时间的病史，除不同程度的听力下降外，皆有耳溢液，其中脓血性及血性耳溢液 8例；均有鼓膜穿孔，其中松驰部穿孔 10例。

Methods 14 teeth with iatrogenic root canal perforation were selected. The root canals were shaped and cleaned, and then obturated with gutta- percha after MTA was used to repair the perforation in the condition with any blood and moisture.

选取医源性因素造成的根管侧壁穿孔患牙14颗，彻底清理根管并预备根管，在止血隔湿的条件下以MTA 即刻修补根管侧壁穿孔。

Methods: The teeth of 4 cases were treated by filling the perforations with the 3M ESPE Single Bond Adhesive and the 3M ESPE F200 Compomer through the pulp cavities,the root canals were obturated well and follow-up surveys were conducted for 3 months.

对4例医源性髓腔穿孔的患牙用3M SingleBond粘接剂和3M F200光固化复合体经髓腔充填修复穿孔，进行完善的根管充填后3个月随访观察。

Objective To summer up the experience of diagnosis and surgical treatment for acute perforating peptic ulcer so as to improve the relevant level.

目的 总结急性消化性溃疡穿孔的诊治经验，以提高对溃疡病急性穿孔的诊治水平。

Ultrasonic method is using low-frequency ultrasonic energy cuticle damage and the Hot perforation technology is using more heat through the skin. Laser technology is in the skin melted on the stratum corneum and the micro-needle device is in the stratum corneum have a micro machine to achieve the purpose of transdermal.

研究活跃的促渗技术包括离子导入（使用低电压电流使药物通过皮肤）、电穿孔技术（使用高压短电脉冲创造暂时的皮肤水性通道）、超声波法（使用低频超声波能量破坏角质层）和热穿孔技术（使用热能使皮肤更具透过性）、激光技术、微针装置来实现透皮目的。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。