两管的

Methods To divide 147cases cacodontia which need root-canal therapy into two groups randomly, 90 cases in the Tinidazole root-canal disinfect group, 57 cases in the Tinidazole root-canal filling group.

方法对147例做根管治疗的患者随机分为两组，替硝唑根管消毒组90例，替硝唑根管充填组57例。

Part I: Characterization of the stability and biocompatibility of PLGA conduits.1 Artificial nerve conduits were successfully fabricated using two different copolymer ratios of PLGA(85:15 and 50:50)(lactide:glycolide).2 Degradation of PLGA(85:15) and PLGA(50:50) conduits were examined in vitro for 12 weeks in phosphate buffered saline at 37℃, pH 7.4 and in vivo for up to 8 weeks following implantation into the rat dorsal muscle.

结果显示：①体内外降解条件下，PLGA(50：50)管吸水率、失重率及生物降解率显著高于PLGA(85：15)管；②两种材料样品体内生物降解率显著高于体外降解率；③扫描电镜观察显示，随降解时间延长，材料样品表现为特征性的虫蚀样破坏并进行性加重，以PLGA（50：50）管尤为明显。

The time to losing eyelash reflex and intubation were recorded .The incidence of cough ,apnoea ,and laryngospasm during the induction period were recorded too. The variety of MAP、HR、SpO2% were recorded in the every time point of induction. The data was analyzed with SPSS software.

记录两组从诱导开始至意识消失时间，插管时间，有无插管反应（呛咳、屏气、喉痉挛及支气管痉挛），记录诱导前、诱导后、插管即时和插管后2min各时间点的HR、 SpO2%及MAP变化，用方差分析和t检验进行统计学的分析。

The influence of solution treatment on mechanical properties of bellows was estimated; The corrosion-resistance of bellows was compared at different materials and states; The capability of anticorrosion of two states bellows in high-temperature oxidation and sulphidation environment was analyzed.

本研究讨论了影响波纹管发生腐蚀的介质及影响硫酸露点温度的因素；分析了波纹管固溶处理后表面残余应力的分布规律；评价了固溶处理对波纹管力学性能的影响；比较了不同材料、不同状态的波纹管耐蚀性能及两态波纹管在高温硫化-氧化环境下的抗蚀性能。

Methods Ninety elective patients undergoing general anesthesia for hysterectomy were randomly assigned to two equal groups. GroupⅡreceived endotracheal intubation protected by sterilized transparent sleeve while groupⅠcorrespondingly adopted unprotective classical endotracheal intubation. Endotracheal swab sampling and bacterial counting were performed on the principle of aseptic processing before endotracheal intubation and extubation, respectively.

90例在全身麻醉下行择期全子宫切除术的患者随机分为两组，每组45例，Ⅰ组采用传统的气管插管操作方法，Ⅱ组采用无菌透明隔离套保护的气管插管操作方法，在气管插管前和拔管前分别按照无菌操作原则实施气管内试子取样，进行菌落计数。

And in two places I need to cross a conduit with a 35 millimetres cold feed pipe.

但管外还要包隔热层而且电线管在两处要与35毫米的冷水管交叉，地方恰好不够。

Taking one kind of specification boiler pipe as the object of study, the cracking parent metal, the cracking fragment and the primary goods were analyzed by vertical and horizontal directions.

以某种规格锅炉炉管为研究对象，在炉管爆裂处的母材、撕裂碎块以及供货原材料的纵横两个方向分别取样进行分析，探讨锅炉管爆裂处的金相变化对炉管失效的影响，并给出锅炉炉管爆裂破坏的金相学原因。

May carry on each kind of specification according to the customer request the straight seam steel pipe processing manufacture, in the workshop is equipped with two tube making production lines, the main processing equipment has 3200-ton tube making hydraulic presses, 1600 ton tube making hydraulic presses, the completely automatic pre-bender, 2000 ton hydraulic pressure finishing machines, the automatic stitching machine, the large-scale numerical control automatic cutter, the plate ultrasonic testing machine, the automatic submerged arc welding machine, the gas protection automatic welding machine, the hydraulic pressure test and so on the tube making industry most advanced technical equips.

可根据客户要求进行各种规格的直缝钢管加工制作，车间内设有两条制管生产线，主要加工设备有3200吨制管液压机、1600吨制管液压机、全自动预弯机、2000吨液压精整机、自动合缝机、大型数控自动切割机、板材超声波探伤机、自动埋弧焊机、气体保护自动焊机、水压试验等制管业最先进的技术装备。

Analyses factors which affect apparatus dew point by theory and experience. Points out that to a given surface air cooler, the relation between apparatus dew point temperature and entering air dry bulb temperature or entering cooling water temperature is linear under dry cooling conditions, and the relation between apparatus dew point enthalpy and entering air enthalpy or ...

指出结构特性一定的表冷器，干工况下冷盘管表面平均热状态温度和进风干球温度、冷水初温成线性关系；湿工况下在空调常用范围内，冷盘管表面平均热状态焓值和进风焓值、冷水初温成线性关系，且两种工况下冷盘管表面平均热状态温度都随迎面风速增大而增大，随水流速增大而减小。

Methods 96teeth with pulpitis or periapical periodontitis were instrumented by handling ProTaper rotary instruments using step-down technique,and by K files using step-back technique for control.All teeth were obturated with lateral condensation methods.The efficiency of preparation was analyzed with ra-diographs before and after operation.

选取患有牙髓炎和根尖周炎的后牙96例，随机分成试验组和对照组各48例，试验组用手用ProTaper多锥度镍钛旋转器械逐步伸入法预备根管，对照组用K锉，逐步后退法预备根管，两组均用侧向加压充填法充填根管，根据治疗前后的X线片，评价后牙根管预备效果。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。