有管的

A mechanic model of a thin tube p asted with an actuator, is presented, the mixed deformations of compr ession and torsion of the tube are analyzed and the relation between the angle o f twist of the tube and temperature in a temperature cycle is given.

建立了粘有SMA丝应变驱动器的薄壁圆管的力学模型，分析了一个温度循环中，薄壁圆管受SMA驱动发生的压扭复合变形，给出了薄壁圆管扭转角与激励温度之间的关系。

The mechanical property testing shows that the seamless PLLA tubes perform excellent radial strength,which indicates that the mechanical properties of biodegradable stents made of these tubes was supposed to be excellent.PLLA and its composites were first used in preparing seamless tubes as antecedency of laser-cut biodegradable coronary stents in china.Finite element analyses of the biodegradable coronary stent model indicate the explorative design basically meets the requirement of reasonable and applicable stents.There is not such kind of research yet in domestic.Optimum laser-cuttting parameters of CO2 laser was cauculated based on experiential formula,within it,biodegradable coronary stents,especially those with complex structure would be manufacutured from seamless tubes quickly by laser microprocessing with high consistency to the design model.The processing efficiency of the CO2 laser demonstrated in experiential formula by us will play an important guiding role in manufacturing biodegradable stents by laser-processing.Our stents that ascribed to laser-cutted,slotted tube stent are proved to be biodegradable, self-expandable and good biocompatible,basically reach the international level on the aspest of manufacturing procedures and design.

研究结果表明：壳聚糖改性材料综合性能优于纯PLLA，更适合于作为可降解冠脉支架的原材料；自主设计的探索性自膨胀管状闭环型可降解冠脉支架的性能符合冠脉设计要求，设计、验证生物可降解冠脉支架模型的研究在国内还未见报道；制备的改性PLLA无缝管的力学性能优越，可通过激光切割获得冠脉支架，这是国内首次采用聚乳酸材料来制备通过激光加工出可降解冠脉支架的无缝管；二氧化碳激光器加工精度能达到加工要求，加工出来的血管支架名义设计与实测值误差小，实现了冠脉支架、尤其是带有复杂外观设计冠脉支架的快速化、规范化加工，对二氧化碳激光器加工聚乳酸材料的效果研究在国内外属于首创，获得的经验公式对日后的深入研究有重要的指导意义；制备的支架为激光切割管状闭环型冠脉支架，支架外观设计、支架加工手段、支架的性能都基本接近国际水平，支架样品符合设计的理念，可以实现自膨胀功能。

Due to the complication of the geometric shape and the non-uniform distribution of the mass and stiffness,it is impossible to obtain the exact solution of natural frequencies of low-finned tube s.

针对低翅片管几何形状复杂，质量和刚度分布不均匀，振动特征值不能有封闭解的问题，采用瑞利-里兹法对低翅片管的固有频率进行了数值研究，获得了低翅片管弯曲振动固有频率的数值计算模型。

Gas identity and concentration can be determined by monitoring the ionization voltage and discharge current of the gas. Gas ionization voltages of SWNTs were lower 30 voltages than MWNTs obtained by CVD, and after plasma treatment, the gas ionization characteristics of MWNTs were improved.

与化学气相沉积方法得到的直立式多壁碳纳米管相比较，旋涂法单壁碳纳米管薄膜电极的气体电离阈值电压要低30V左右，等离子处理对改善直立式多壁碳纳米管的气体放电性能有帮助。

N-doped TiO2 nanotubes absorb visible light distinctly, and showed higher efficiency of photocatalytic activity than TiO2 nanotubes by model experiment of degradation of the solution of Safranine T.

结果表明，用模板法制备的二氧化钛纳米管管径均匀、可控且排向一致，从DRS光谱可以推测出氮掺杂后的二氧化钛纳米管在可见光区有较强的吸收，并且与二氧化钛纳米管相比氮掺杂的二氧化钛纳米管的降解碱性藏花红溶液的效率更高。

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。

Large-diameter tube of hot-rolled prices basically stable, if the price of cold-drawing tube to maintain the stability of a certain period of time, the second engineer officers are likely to rise, it is estimated or not.

大口径热轧管价格基本稳定，若冷拔管价格维持一段时间的稳定，则大管有上涨的可能，估计涨幅不大。

In the case of film condensation, the total heat transfer coefficient of B30 circularly-grooved tube can increase 44%~ 95% compared with smooth tube; for TA2 circularly-grooved tube, it is 51%~64%. And the relevant flow friction inside the tube obviously increases.

在膜状凝结条件下，B30波槽管的总传热系数比光管的提高44％～95％；TA2波槽管的总传热系数比光管的提高51％～64％；而相应的管内冷却水流动阻力也有明显的增加。

Harpsichord 羽管键琴:A stringed instrument resembling a grand piano but usually having two keyboards and two or more strings for each note and producing tones by the plucking of strings with plectra.

一种卧式竖琴型或梯形的键盘乐器，类似三角钢琴，但通常有两层键盘（部分为一层，及其个别亦有三层）和两套或更多的弦，通过羽管或皮制拨子（拨子连接一顶重器，一般为一根直立的木杆）拨弦，赖琴键内端推动发声。

I XiongGuPo if you don't; I would have turned up; you and the lion roar; I dare say; ah; your compliment; luo base; is only ugly luo; but also not ugly; recognize your person; thought you gene mutations;"Funky" this word is somebody else for you; the British; once; I still think you are childish; school of a flower; then; just know you but is the huge slag; didn't see you again; eat; sleep all food and sleep; but when I want to see some of you; because the - can reduce weight; rolling... The rolling... SB batch; the tart; cheap; hammer; just a teacher talk; or finished suo; have what amazing suo; Sue; Sue; Sue; oh; not to have testified against 30; well; good batch laozi; Lao tze want to talk show you hammer son; pipe noise; and you are not cheap; you have the tube Lao technical qualifications; you exactly want to shout; to shout; you have sinned against you; and the benefits of your talk against us and benefits; melon hammer into one partner; we also cried; waste you nearly three years; humiliated you people dead; for there is futile; undead living waste land; air or early death waste dead... Ha ha; my friends at the turn to remember: oh;Don't try to guess who is that man; perhaps is next to you.

我如果你不是熊家婆、我早就和你翻脸咯、你的那个狮子吼、我、实在不敢恭维啊、你、除咯贱、就只剩丑咯、而且还不是一般的丑、认不到你的人、还以为你基因突变的、&Funky&这个词就是人家英国人、为你整出来的、曾经、我还幼稚的认为、你是学校的一枝花、后来、才晓得你不过是人海中的一粒渣、没看你一次，饭都吃不下、觉都睡不好、但是、有些时候我多想看见你、因为－可以减肥、滚…马不停蹄的滚… SB 批，骚货，贱货，锤子嗦，区区一个老师嘛，要不完了嗦，有啥子了不起嗦，告、告、告，日哦，有种不要告卅，给老子明说嘛，好批骚嗦，老子要杂子，管你锤子事啊，贱批，你还不配管老子的，你有资格嗦，你到底想杂嘛，要杂嘛，得罪完人有你的好处嗦，得罪我们对你又有锤子好处嗦，就是瓜婆娘一个，，枉我们还喊了你快三年了哦，丢脸死了，你这样的人还不死留着有啥用哦，活着浪费空气死了浪费土地，还是早点死了算了……呵呵，朋友们看了的要记得转哦、千万不要去猜那个人是谁，或许下一个就是你

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。