管

This report presents the detailed analysis of all the application areas of FRP pipes in 2009 and would be of great use to both materials suppliers as well as pipe molders to plan their production and target high growth application areas.

目前，国内生产的原材料与国外发达国家相比，各种性能已相差无几，原材料的国产化，以及在生产技术上的不断提高和成熟，FRP管已处在价廉物美的水平，同等输送量的FRP管价格已低于钢管的综合性能价格，但FRP管在应用过程中还是有其它管材所没有的综合经济优点。

All canals were obturated using lateral condensation technique. The efficiency of preparation and obturation of root canals was analyzed with radiographs before and after operation.

两组均采用侧向加压充填法充填根管，通过术前、术后的X线牙片评价根管预备与根管充填的效果。

Methods: 492 patients with primary teeth disease were divided into three groups randomly, these teeth were obturated with root canal filling paste, paste iodoformzinc oxide eygenol and paste iodoformcalcium hydroxide respectively.The clinical efficacy was observed at 3 months,1 year and 2.5 years later after root canal therapy.

492颗乳患牙随机分为3组，分别以根管充填糊剂、碘仿氧化锌糊剂和碘仿氢氧化钙糊剂作为根管充填材料进行根管治疗，观察术后3个月、1年和3年的临床疗效。

The Ostia covered with a thin membrane is a depressive structure on the surface.

出水口为一圆口管腔，管腔内有网状结构将管腔分隔。

The product includes:SJSZSeries plastic extruder,∮20～630mm PVC Pipe material production line,∮20～710mm PE Large aperture pipe material production line,∮300～2500mm SBG Series double-wall sewer pipe production line, Production line of multiple-hole pipe communication, Random polypropylene pipe production line, Silicon-core pipe production line, Alumiunm-plastic complex pipe production line, SJYF Model plastic special-shaped material extruding unit, PVC Micro-foaming special-shaped material unit, PVC Plastic printing making unit, Recovered film prilling unit, Plastic blowing film unit, plastic blowing bottle machine, Medical injector full set equipment, Medical infusion unit full set equipment, Medical absorbent cotton full set equipment, Drink machinery, etc.

我公司生产的设备有：SJSZ系列塑料挤出机、∮20～630mmPVC管材生产线、∮20～710mmPE大口径管材生产线、∮300～2500mm PE双重壁下水管生产线、PP-R管材生产线、SJYF型塑料门窗异型材装饰板生产线、塑竹木异型材生产线、通讯用多孔管生产线、硅芯管生产线、铝塑复合管生产线、PVC芯层发泡管生产线、塑料板生产线、回收造粒生产线、塑料吹瓶机、塑料吹膜机组、医用注射器全套设备、医用输液器全套设备、医用药棉全套设备、饮料机械及塑料制品。*主要业务：塑料机械，医用耗材制造设备，饮料机械，塑料制品。

With painstating efforts, We have fixed assets twenty million yuan more, which occupies 35000m2, built-up area 20000m2, have four caton production-lines making Cavity wall corugated pipe, two carton pipeline making Ridded pipe and six carton pipeline making PE pipe protecting fibre optise Cable, annual output Yeach ten thousand tons and output value exceed one hundred million yuan.

历经十多年艰苦创业，企业拥有固定资产2000多万元，占地面积35000平方米，建筑面积20000平方米，4条双壁波纹管生产流水线，2条加筋管生产流水线，6条PE光缆护套管流水线，2条非开挖PE顶管流水线，年生产能力达万吨规模，年产值突破1亿元。

The curved line, linking the coordinates of point C, likes a "V" toward the outer of the primary curve. CONCLUSION: the straitening phenomenon was evident in preparation of S-shaped canals with hand-used Pro-Taper, and occurred mainly after instrumentation by F1 file.

手用ProTaper镍钛根管预备器械在预备重度弯曲细小的根管过程中有明显的根管拉直现象，且主要始于F1预备后。

On the foundation of the analysis,a fault diagnosis method which is an advanced pattern recognition method is proposed and a fault diagnosis system of generator excitation power unit based on virtual instrument is developed.It is proved by experiment that the fault diagnosis system can precisely judge which thirstier goes wrong and get accurate diagnosis result.

发生晶闸管直通故障时，瞬间将造成相电压短路，短路电流使保护电路动作；而发生晶闸管开路故障时(如晶闸管器件门极损坏或触发脉冲丢失等故障)，功率单元仍然工作，但输出励磁电压的脉动增大，平均值降低，这种带病工作导致励磁电压波形产生畸变，从而导致了发电机工作在不稳定状态，同时也加大了对电网的干扰[2]。

She no longer manages his dishevelled hair, no longer care when he rests, no longer cares where he go, and who he with, only tidies up the room as always, cleans up the trash.

她不再管他蓬乱的头发，不再管他几点休息，不再管他到哪里去、和谁在一起，只是一如既往地去收拾房间，清理那些垃圾。

Results The successful rates of single puncture were 82.3%,two-times puncture 93.7%,three-times puncture 100%.The effects of all cases were good.

结果 UPTCD 次置管成功率82.9%，二次置管成功率93.3%，三次置管成功率100%，全部病例引流通畅，效果明显。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。