穿孔的

The anatomical study deepens the knowledge of G-type conducting cells: 1 It proves the theory of two depositional process for secondary wall (Bierhorst, 1960): the discontinuous cellulose layer is laid down before the continuous lignified layer; the former layer is prone to be broken down, while the latter is highly decay-resistant; 2 It suggests that the cellulose primary and secondary walls of tracheids are not perforated. Instead of longitudinal pits (Li, 1992), the lignified tracheid secondary wall of Hsüa possesses irregular simple perforations; 3 In Hsüa reflexa and Huia gracilis, the perforation casts may represent the thickness of lignified secondary wall; 4 The wall structure of G-type tracheid is diversified. At the genus level, the secondary wall structure differs in the distribution, internal shape and structure of the perforations; 5 Perforations of some G-type tracheids combine the characters of S-type tracheids in their distribution, density and diameter.

解剖学的研究加深了对G-型输水管胞的认识 1）验证了管胞次生壁分两个阶段形成的理论（Bierhorst，1960），即先后形成不连续的纤维质层和连续的木质化层，前者易被分解，后者抗侵蚀性强；2）证明管胞纤维质的初生壁和次生壁不具穿孔，Hsüa管胞的木质化次生壁具有不规则的简单穿孔，而不是纵列的纹孔（Li，1992）；3）Hsüa reflexa和Huia gracilis的穿孔铸体可代表木质化次生壁的厚度；4）G-型管胞壁层结构具多样性，植物属一级的分异主要表现在次生壁穿孔的分布、孔腔形状和结构的不同；5）某些G-型管胞的穿孔在其分布、密度和孔径方面可兼有S-型管胞的特征。

Under the scanning electron microscope , for the first time we compare and study both the coalified tracheids through chemical maceration and permineralized tracheid lumen casts. This method reveals the microstructures of wall and perforations of G-type tracheids: 1 The lignified layer of secondary wall is composed of uneven material and further divided into S〓, S〓, S〓 layers; with the smooth enclosing wall, the perforation is internally dumbbell-shaped; 2 In Huia gracilis, the enclosing wall of tracheidal perforation contracts and possesses secondary perforations. The perforation has thickened border facing the tracheid lumen.

本文首次在扫描电子显微镜下对比研究经化学浸解获得的碳质管胞和矿化的管胞腔铸体，明确揭示出了G-型管胞壁层和穿孔的显微结构：1）Hsüa reflexa次生壁木质化层的组成不均一，分为S〓、S〓和S〓层；穿孔腔为哑铃形，腔壁光滑；2）Huia gracilis的穿孔腔收缩，腔壁上发育次级穿孔，孔口具有边缘加厚。

Cases accepted operation and 20 cases were treated by conservative therapy. Conclusion: The X inspection is the main way for diagnosis gastroduodenal perforation, the neoplasty is the effective method for treating the gastroduodenal perforation.

X线检查是胃十二指肠穿孔主要的诊断方法，穿孔修补术仍是治疗急性胃十二指肠穿孔的有效方法。

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。

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。

objective to investigate the clinical characteristics and the surgical treatment for perforation of gastric cancer.methods we summarized 22 cases suffering from perforation of gastric cancer in our hospital,6 were treated with repair of perforatlon and gastrojejunostomy at the same time,8 with partial gastrectomy,8 wth radical gastrectomy for gastric cancer（d2,d3）,and positive treatment such.as intraperitoneal chemothrapy to the patients above.results the life expectancy of patients treated with repair of perforation,partial gastrectomy or radical gastrectomy for gastric cancer was 6,29.2 and 37.3months.conclusion reasonably select surgery methoty and positive treatment are keys to prolong the survival time.

目的 探讨胃癌穿孔的临床特点及外科治疗方法。方法对22例胃癌穿孔病人实施不同手术方式治疗。其中行穿孔修补加胃肠吻合术6例，姑息性胃癌切除术8例，胃癌根治术（d2，d3）8例，后两者术后均行腹腔化疗等综合治疗。结果穿孔修补加胃肠吻合术、姑息性胃癌切除术、胃癌根治术术后平均生存期分别为6个月、29.2个月、37.3个月。结论合理选择术式，综合治疗，是延长病人生存期的关键。

objective to discuss treatment of acute perforation of peptic ulcer,to elevate i stage operation recovery rate.methods 208 cases in 20 years were retrospectively analysed,86 cases (41.35%) were recovered by subtotal gastrectomy;18 cases (20.93%) were undergone billroth i anastomosis;68 cases (79.07%) billroth ⅱ;42 cases (61.76%) billroth ⅱ precolonic anastomosis;26 cases (38.24%) retrocolic anastomosis.results in 86 cases,1 case was complicated by gastroparesis,others all recovered.all cases were followed up for 5 years.conclusion the procedure can shorten the recovery time and increase quality of life.

目的 探讨消化性溃疡急性穿孔的治疗方法，旨在提高ⅰ期手术治愈的成功率。方法回顾性总结分析20年间手术治疗消化性溃疡急性穿孔208例，其中86例（41.35%）采用胃大部连同病灶切除ⅰ期治愈，胃肠重建采用billrothⅰ式吻合18例（20.93%），billrothⅱ式吻合68例（79.07%），billrothⅱ式结肠前吻合42例（61.76%），结肠后吻合26例（38.24%）。结果 86例中除1例billrothⅱ式吻合术后发生胃瘫并发症，经保守治疗月余治愈外，其余病例术后恢复顺利，均随访5年以上情况良好。结论消化性溃疡急性穿孔的ⅰ期手术治疗，解决了因溃疡穿孔单行修补术后再次复发穿孔、出血、幽门梗阻、粘连、溃疡恶变而重复手术等问题，缩短了治愈周期，提高了生存质量。

Deep research and comparison show that, besides the centrarch xylem, H. reflexa has G-type tracheids. Upon and between the annular secondary thickenings, the lignified layer of secondary cell wall bears irregular simple perforations of small diameter and high density. So these perforations have the characters of S-type tracheids. The robust xylem strand and dense perforations indicate the strengthened water-conducting capacity.

深入的研究和比较表明H.reflexa的木质部除为心始式外，管胞为G-型，次生壁的木质化层具有不规则的简单穿孔，穿孔直径小，密度大，分布在环纹次生加厚带和其间，兼有S-型管胞穿孔的特征；粗壮的木质部束和密集的穿孔表明较强的输导能力。

Body piercing literally means to have a part of your body pierced, in order to wear jewellery in the hole made.Ear piercing is the most common form of body piercing.

身体穿孔的字面意思有一部分你的身体穿孔，在以磨损，珠宝首饰，在孔made.ear穿孔是最常见的形式，身体穿孔。

It's an inevitable tendency to facilitate blast drill with intelligent control systems. Drilling mechanism of Rock Bit and main factors of influencing drilling effects are studied and analyzed synthetically in this thesis.

本文研究了牙轮钻头的破岩机理和影响牙轮穿孔效果的几个主要因素，对牙轮穿孔的几个参数进行了综合分析，同时指出了钻机本身的自动化水平和司机的操作水平也是影响牙轮钻机穿孔效果的一个重要因素。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。