查询词典 perforation

From 1982 to 1988, 14 cases (8 females and 6 males) with granular myringitis had been operated under local anesthesia, and used an operation microscope to remove all the granulation tissue which existed over the ear drums. After we had removed the granulation tissue over the ear durms, we had performed free ear canal skin autograft for 8 cases – group A, and we had performed temporalis fascia with free ear canal skin autograft for 4 cases (small perforation was made by accident during the surgery due to large granulated area,﹥50%)– group B, but we had covered silastic sheet over the denuded drum surface for the other 2 cases –group C.

14例肉芽性鼓膜炎为自民国71年至77年间的住院手术病人，皆在耳局部麻醉后，於显微镜下刮除鼓膜上所有肉芽组织，其中8例於刮除鼓膜上所有肉芽组织后有移植外耳道的皮肤－A组，另外4例则因鼓膜上肉芽组织范围大於50%以上，致手术中意外地造成鼓膜小穿孔，需立刻加铺颞肌膜后，再移植外耳道的皮肤－B组，其余2例则只在刮除鼓膜上的肉芽组织后，直接铺上一块矽胶片－C组。

ConclusionAutologous fat transplantation in myringoplasty is an ideal operation way applicable to middle and small perforation of tympanic membrane.

自体脂肪移植鼓膜修补术适用于中、小鼓膜穿孔，是一种理想的手术方法。8} 2f，百拇医药

Early application of soft tissue myringoplasty can increase the healing rate as well as minimizing hearing impairment after large traumatic tympanic membrane perforation.

以软组织移植的鼓膜成形术，用於大面积的外伤性鼓膜破孔的早期处理，可提高愈合率达到100%，听力也可回复到正常。

Six cases from control group suffered secondary infection,none was from myringoplasty group.Conclusion: Myringoplasty is an ideal method for traumatic perforation of tympanic membrane.

鼓膜成形术治疗外伤性鼓膜穿孔可缓解症状，提高听力，减轻患者痛苦，促使鼓膜早期愈合，避免继发感染，操作简便，安全有效。

The 25-year decline in nonperforated appendicitis and the recent increase in appendectomies coincident with more frequent use of CT imaging and laparoscopic appendectomies did not result in expected decreases in perforation rates.

需进一步研究确认与非穿孔性阑尾炎相关的术前特征，可能有利于外科医师对于那些非穿孔性阑尾炎的病例行延迟性手术。

The perforation into a plain concrete panel with ogival and flat nose perforators is numerically simulated with the BPM^2D （beam-particle model in two dimensions）.

用梁-颗粒模型BPM^2D对卵形头和平头动能弹贯穿混凝土平靶的过程进行数值模拟，给出贯穿过程中混凝土内部速度场的变化情况及混凝土的破坏区域。

During the design of perforated liner casing, small phase angle and proper larger diameter and density of perforation are adopted and initial ovalization is constrained strictly in order to improve the collapse pressure and area of passage.

建议在实际煤层气完井筛管设计过程中，采用小相位角，严格控制初始椭圆度，适当增加射孔直径和射孔密度，以达到提高筛管抗挤强度和增加过流面积的目的。

The calculating results are compared with the test data in available literatures and FEM results. The research results show that the plastic hinge model is precise and correct, which can satisfy with the actual engineering demands. The collapse pressure of perforated liner casing decreases with phrase angle, initial ovalization and diameter-thickness ratio increasing, and increases with the yield stress. The phrase angle and initial ovalization have greatly influence on the collapse pressure. The collapse pressure of perforated liner casing is slightly changed with the diameter and density of perforation when the diameter and density are smaller than 12mm and 120 shots per meter, respectively.

计算结果表明：筛管抗挤强度的塑性铰模型具有很高的计算精度和准确度，可以满足工程实际需要；筛管抗挤强度随着射孔相位角、径厚比和初始椭圆度的增加而降低，随着屈服强度的增加而增加，相位角和椭圆度对筛管抗挤强度影响比较显著；在射孔直径小于12 mm、射孔密度小于120 孔/ m 时，筛管抗挤强度随射孔直径和射孔密度增加变化不明显。

The plastic hinge model of perforated liner casing is built up to calculate the collapse pressure according to the strength and deformation behavior of perforated liner casing subjected to external pressure. The calculation equations of collapse pressure of perforated liner casing with initial ovalization are deduced by energy method. The influences of phrase angle, diameter of perforation, shot density, initial ovalization, diameter-thickness ratio and yield stress on the collapse pressure of perforated liner casing are studied. The model and equations are used to calculate the collapse pressure of an actual perforated liner casing as example.

摘摇要：根据煤层气完井筛管受力特点建立了筛管受力的塑性铰模型，利用能量法推导出带有初始椭圆度筛管抗挤强度的计算公式，分析了相位角、射孔直径、射孔密度、初始椭圆度、径厚比和屈服强度等影响因素对筛管抗挤强度的影响规律，并对某煤矿使用的筛管抗挤强度进行了计算，与已有的实验数据和有限元计算结果进行了对比。

The plastic hinge model of perforated liner casing is built up to calculate the collapse pressure according to the strength and deformation behavior of perforated liner casing subjected to external pressure. The calculation equations of collapse pressure of perforated liner casing with initial ovalization are deduced by energy method. The influences of phrase angle, diameter of perforation, shot density, initial ovalization, diameter-thickness ratio and yield stress on the collapse pressure of perforated liner casing are studied. The model and equations are used to calculate the collapse pressure of an actual perforated liner casing as example.

根据煤层气完井筛管受力特点建立了筛管受力的塑性铰模型，利用能量法推导出带有初始椭圆度筛管抗挤强度的计算公式，分析了相位角、射孔直径、射孔密度、初始椭圆度、径厚比和屈服强度等影响因素对筛管抗挤强度的影响规律，并对某煤矿使用的筛管抗挤强度进行了计算，与已有的实验数据和有限元计算结果进行了对比。

Alternatively, the con- trollers can use the synchronous rectifier itself or loss- less inductor current-sensing methods to provide overload protection with lower power dissipation.

另外，康威特罗勒斯可以使用同步整流器本身或亏损减少电感电流检测方法，以提供低功耗过载保护。

Mr. Dauber's other Schatz hangs in his home movie studio.

多伯把沙兹的另一件作品挂在家里的电影室。