查询词典 tubes

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。

In view of the consecutive bursting problems of reheater tubes in Xinxiang Thermal Power Plant,the diagnosis tests at cold and hot state of reheater were carried out, thus the causes for reheater bursting were found out, and it was put forward that to employ arc tangent tertiary air to reduce flue gas temperature derivation, to replace part reheater tubes with TP 347 stainless steel tubes with better heat-resisting property etc.

针对新乡火电厂再热器连续爆管问题，进行再热器冷态和热态诊断试验，查明了造成再热器爆管的原因，提出用三次风反切减少烟温偏差，并将部分再热器管子更换为耐热性能更好的 TP347 不锈钢管等技术措施。

I bought the Booby Tubes today and can't wait to use them when my little bundle arrives.

我今天刚买了Booby Tubes，已经迫不及待的要用它了。

Another feature of HEDDTB is that its tubes' buddle is composed of tubes with different diameters, which lead to a smaller fluctuation of heat transfer coefficient in the condition of fluctuating flux than that of the heat exchanger with tubes that has the same diameter in the case of low Reynolds number.

异径管束换热器的换热管束由直径不同的管子组成，这种换热管束在低雷诺数下传热系数随流量的波动相对同径管束而言较小，因此异径管束有一定的抗传热系数波动的性能，这使得换热器在流量波动的工况下工作性能稳定。

Results Among 62 cases, the double J tubes in 58 cases were took out successfully under cistoscope, the double J tubes in 2 cases were dislodged by emiction, and the double J tubes in 2 cases were took out under ureteroscope because of upward displacement.

结果 62例中，58例通过膀胱镜顺利将双J管取出；2例女性患者在排尿时尿出丝线而直接牵出；2例因双J管向上移位，经输尿管镜取出。

We compared endotracheal tubes obturated withan inflated esophageal stethoscope with normal ETTs with regardto the prevention of epistaxis and navigability, both with andwithout thermosoftening.

我们比较了头端装有充气式食道听诊器的气管内导管（ endotracheal tubes ， ETT ）与普通 ETTs ，有或无热软化时在预防鼻衄和提高适航性方面的不同。

Moreover, since the strain energy of zigzag tubes is larger than that of the armchair tubes with the same semidiameter, the ends of the armchair tubes are easier to be closed than those of the zigzag ones. And the closed structures of the zigzag tubes have a lot of defects, even at 3000 K, there will be few carbon atoms flying away from them.

此外，由于锯齿型碳管应力能比同口径扶手型碳管的应力能大，使得扶手型碳管比锯齿型碳管更容易形成端口封闭的结构，且锯齿型碳管端口的封闭结构出现相对较多的缺陷，甚至在3000K下会有少最碳原子从端口飞离碳管。

The 2, 4 mg tubes and the control tubes were not precipitated except for the 8 mg tube with 10000 r/min configuration. The 3 transparent tubes were desalted with column of Sephadex G-25 Superfine HiTrap respectively. All of the eluents of the 3 tubes were half-diluted consecutively with phosphate buffer saline respectively to change totally into 36 samples of 2 mg group, 4 mg group and control group, with 12 in each group.

取2、4 mg管及未加DNFB的HBIG水溶液对照管，各取半量对半稀释，以HiTrap分子筛柱脱盐， 3个洗脱液再分别作对半系列稀释11次， 3组共组成36个标本。

Water inside vacuum heat- collection tubes; since the hot medium inside vacuum tubes floats up and cold one goes down due to respective specific gravity, hot and cold mediums convections up and down to cause the heat conduction, furthermore transfer the heat to the related working medium in the heat tubes, the working medium sorbs the potential heat and becomes steam to rise up to the condensing section from the tube heat evaporating section; it emits the heat in condensing section to change again into liquid working medium; it flows back to evaporating section under the gravity action, the emitted heat is transferred into the water inside water tank or tube group by means of the heat-conduction through heat tubes condensing section; it makes the cold water in water tank into hot water in the repeated way.

阳光透过全玻璃真空集热管的外玻璃，照射到涂覆在内玻璃管外表面的选择性吸收涂层上，涂层将太阳的辐射能吸收并转化为热能，通过内玻璃管壁导热，传递给真空集热管内其液态传热介质，由于真空集热管内热的介质因比重小而上浮，冷的介质因比重大而下沉，冷热介质上下对流传热和导热，再通过热管的金属壁导热，将热量传递给热管内其相变工质，工质吸收汽化潜热而变成蒸汽，由热管蒸发段上升到冷凝段，在冷凝段放热冷凝，又变成液态工质，在重力作用下流回蒸发段，所放出的热量通过热管冷凝段金属管壁导热，传递给水箱或联集管内的冷水，周而复始，于是便将水箱内的冷水全部加热成热水。

The products have General efficient tubes, three-high tubes, three-cavity tubes and other series, specifications like ф47,ф58,ф70 and so on, and from 1.2m to 2.1m in length about 100 species. Its nnual output can reach 7 million vacuum tubes.

产品有普通高效管、三高管、三腔管等多系列，ф47、ф58、ф70多种规格，长度从1.2米-2.1米近百个品种，年产达700万支真空管。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。