双管的

The aulos (the Greek word, Latinised, was tibiae )— usually double, consisting of two double-reed pipes, not joined but generally played with a mouth-band to hold both pipes steadily between the player's lips.

该 aulos （希腊字，Latinised，是胫骨）-通常是双，其中包括两个双芦苇没有加入管道，但一般乐队奏了嘴对持有球员的嘴唇都管稳步之间。

The incidence of double root canal is high in the single-rooted maxillary premolars.

上颌前磨牙单根双根管率较高，其根管峡部的发生率因此也较高。

Taking the double-U type ground heat exchanger as example, performs in-situ thermal response tests in three different seasons, and the results show that there does exist the seasonal effect.

以双U形地埋管换热器为例，进行了3个不同季节的地下热响应换热实验。实验结果表明，在地埋管换热器地下热响应实验中存在着季节效应。

Objective Discussion foresight nursing in the prevention leaving alone pair aerocyst ureter has in the cupping difficulty function.

R694.7C1005-2720(2009)11-0079-02目的：探讨预见性护理在预防留置双腔气囊尿管发生拔管困难中的作用。

Results Because the result prevented and solves the leaving alone pair aerocyst ureter an aerocyst obstruction , the aerocyst retraction bad , the urine to form the cupping difficult phenomenon which filthily and so on factors caused , has obtained the good results .

结果：预防和解决了留置双腔气囊尿管因气囊道梗阻，气囊回缩不良，尿垢形成等因素导致的拔管困难现象，取得了良好效果。

Results: All of 19 patients who received simple insertion and regular change of ureter stents experienced consistent improved renal function. Of 5 patients treated with antegrache or retrograde endoscopic ureterotomy/dilation and long-term indwelling of Di stent, 4 showed recovered and stable renal function, and 1 changed to nephrostomy because of unsatisfying outcomes. Three patients received permenant nephrostomy after unsuccessful endoscopic attempts and remained functionally uneventful.

结果：19例单纯输尿管内插入内支架管并定期更换，肾功能改善并基本保持稳定。5例采用顺行或逆行的输尿管镜内切开和／或扩张治疗，并长期停留双J管，4例肾功能有所恢复并稳定，1例效果不理想，改行肾造瘘。3例试行窥镜处理失败，改行长期肾造瘘，肾功能保持稳定。

objective:discusses danlu tong to supervise the piece treatment waist canales spinalis to be narrow sickness(chinese medicine dialectical anti-supervises arteries for stasis)the clinical curative effect and the security.method: uses the double blind stochastic comparison method treatment waist canales spinalis to be narrow sickness(stasis anti-to supervise arteries)the patient 200 examples,danlu tong supervises the piece group 100 examples,the bone immortal piece group 100 examples.result:①danlu tong supervises the piece group clinical total effectiveness 93%,revealing rate 54%,the curative effect obviously surpasses the bone immortal piece group.

目的：探讨丹鹿通督片治疗腰椎管狭窄症的临床疗效和安全性。方法：采用双盲随机对照方法治疗腰椎管狭窄症患者200例，丹鹿通督片组100例，骨仙片组100例。结果：①丹鹿通督片组临床总有效率93%，痊显率54%，疗效明显优于骨仙片组。

Main products of BETER include: Analgesia pump, Tracheal Tube, Endobronchial Tube, Tracheostomy Tube and so on.

主要生产的产品：止痛泵、气管插管、双腔支气管插管、气管切开导管等品种系列。

A preferred construction shall be as follows: Bowls zinc free bronze, or niresist or duplex stainless steel; Impeller zinc free bronze, or niresist or duplex stainless steel; Shafting duplex stainless steel or monel; Column pipe Stainless steel 416SS or 316SS Discharge head high strength cast iron with epoxy lined waterways Boltings stainless steel.

一个优先的工程将是依下列各项：碗锌释放青铜，或 niresist 或双三极管不锈钢；推进者锌释放青铜，或 niresist 或双三极管不锈钢；桥系双三极管不锈钢或 monel；专栏以管输送不锈钢 416SS 或 316SS 排成一行航路的和环氧基树脂的解除头高的力量演员阵容铁 Boltings 不锈钢。

The production line for both three layer PE pipe and epoxy powder inner anticorrosion pipe came from the reformation of an original production line of three layer PE pipe. The main problems to have been solved are as follows, convert the conventional spray gun deflector into two parts of diversion nozzle and gun wick to suit for different pipe diameters; adopt two stage retrieval equipment to increase powder retrieval rate and improve work environment; enlarge the calibres of gas jet and Venturi pump jet to increase powder output 20% above to ensure the spry coating thickness; design gun pushing device to raise automatic production level.

三层PE管和环氧粉末内防腐管兼容生产线是在三层PE管生产线的基础上改造而成的，主要解决了如下技术问题：将常规使用的喷枪导流体改成导流嘴和枪芯两部分，以适应喷涂不同直径钢管的需要；采用双级回收装置，提高粉末回收率，改善作业环境；加大一次气喷嘴和文丘里泵喷嘴的口径，使出粉量增加20%以上，从而保证涂层喷涂的厚度；设计推枪装置，提高生产的自动化程度。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐