查询词典 boring tube

The fourth category: Machine Tool category: X 2008 -(16-20) gantry Xitang Chuang, X 2010 -(20-40) gantry Xitang Chuang, X 2012 -(30-60) gantry milling Boring Machine, X 2016 -(30-90) gantry Xitang Chuang, X 2020 -(40-120) gantry Xitang Chuang, various goal-ray machine, SJ4-1 milling boring head, SJ5-1 milling Boring First, SJ7-1 milling boring head, HY500 CNC milling machine, HY600 CNC milling machine, HY740-processing center, HY850-processing center, HY1060-processing center, various types of processing center-ray machine.

第四类：机床类：X2008-(16-20)龙门铣镗床、X2010-(20-40)龙门铣镗床、X2012-(30-60)龙门铣镗床、X2016-(30-90)龙门铣镗床、X2020-(40-120)龙门铣镗床，各类龙门光机、SJ4-1铣镗头、SJ5-1铣镗头、SJ7-1铣镗头、HY500型数控铣床、HY600型数控铣床、HY740型加工中心、HY850型加工中心、HY1060型加工中心，各类加工中心光机。

In this paper, the quantitative relation between the mounting angle of boring tool and boring cutting face outline in boring process can be reasoned from discussing the movement of rotation error of boring machine spindle, thus it is possible to optimistically seek mounting angle so as to obtain the best processing effect.

本文从研究镗床主轴回转误差运动出发，推导出镗削加工中镗刀安装角与镗削截面廓形的定量关系。

And the development and formation of the sieve tube elements of the different cultivars were influenced by the different levels of B: the sieve tube elements of the two cultivars were not formed at the level of 0.001mg/L; At the level of 0.01mg/L, the sieve tube elements of the high efficiency (Qingyou 10) cultivar could be formed, but the structure of the sieve tube elements was not complete, and the abruption and differenciation of the sieve tube elements of the low efficiency cultivar were inhibited, they were not formed; At the level of 0.01mg/L, the sieve tube elements of the two cultivars were formed.

不同硼水平下，不同硼效率甘蓝型油菜品种根尖筛管分子的发育与形成受到影响：硼浓度为0.001mg／L时，两个油菜品种都不能形成筛管分子；硼浓度为0.01mg／L时，硼高效品种青油10号筛管分子可以形成，但结构受到破坏，而硼低效品种Bakow筛管分子的分裂与分化受阻，几乎不可能形成成熟的筛管分子；硼浓度为0.5 mg／L时，两个油菜品种都能正常生长发育。

objectiveto explore the drain way to tear with inferior lacrimal passage ruined critically.methodsthe special silicon tube whose bore 1mm and diameter 2mm was inserted between conjunctival sac and nasal vestibule,the tube was placed under the soft tissue of bucco-nasal groove and in the surface of the protrusion of upper jaw bone.resultsthere were 32 patients who undergone tube above five years.one patient of them was pulled out the tube because of papilloma hyperplasia,the other patient was pulled out the tube with the tube slide below,and the rest 30 patients kept the drain well and co

目的探讨下泪道破坏严重时泪液引流途径。方法在结膜囊-鼻前庭间安置一个内径1mm、外径2mm的特制硅胶导管，此管置于鼻颊沟软组织下，上颌骨前突表面。结果治疗32例，观察5年以上，其中1例因结膜乳头状瘤增生而拔管，1例因导管下滑而拔管，30例引流良好，病人亦能耐受。本文就引流机制、并发症、机体耐受问题和操作进行了详细地讨论。结论泪道外插管是下泪道严重损害时泪液引流的一种较好的解决方法。皮下；结膜鼻腔造瘘术；硅胶导管

The method comprises following steps: reacting hydroxylation carbon nano-tube successively with reagent containing halogen and hydrosulphide to prepare sulfhydryl carbon nano-tube; reflowing the sulfhydryl carbon nano-tube and platinum salts in polyatomic alcohol, processing in hydrogen atmpsphere to obtain sulfhydryl anchoring platinum / carbon nano-tube catalyst; reflowing the sulfhydryl carbon nano-tube successively with the hydrochloroauric acid and the platinum salts in polyatomic alcohol, processing in hydrogen atmpsphere to obtain sulfhydryl anchoring platinum-gold / carbon nano-tube catalyst.

本发明将市售羟基化碳纳米管先后与含卤试剂和氢硫化物反应得到巯基化碳纳米管。再将巯基化碳纳米管与铂盐在多元醇中回流，氢气氛中处理得到巯基锚固铂/碳纳米管催化剂。将巯基化碳纳米管依次与氯金酸和铂盐在多元醇中回流，氢气氛中处理得到巯基锚固铂-金/碳纳米管催化剂。

The water chamber takes the shape of tilting cube, in favor of uniform distribution of cooling water on tube plate surface. The tube bundle is divided into two groups of zygomorphy according to the bisection system and it has eight support clapboards. The siphonopore center of each clapboard increases a certain distance corresponding to that of two tube plates and the cooling tube takes the shape of arch. The two-way cooling water of bisection flows through the condenser in opposite direction so as to improve the distribution of heat load for tube bundle. Around the throat of condenser, the final stage low-pressure heater, air extraction tube, intake device of bypass exhaust and the like are deployed.

它的特点是：水室呈倾斜立方体形状，有利于冷却水流在管板面上均匀分布；由于采用对分制，管束相应地分为左、右对称的两组，并且管束设有八块支撑隔板，每块隔板的管孔中心相对于两端管板的管孔中心依次抬高一定的距离，以使冷却管呈拱形状；对分制的两路冷却水以相反方向流过凝汽器，从而改善管束的热负荷分布；在凝汽器喉部布置了末级低压加热器，抽汽管道及旁路排汽接受装置等。

Wherein, the handle is formed by the hand-holder and a handle tube with adjustable length; the machine body has a handle mounting part and several parts inside it to filter the foreign matters of air; the fixing plug can fix handle tube on the machine body; the handle guider can guide the handle tube on one side of machine body and it is formed by the inner guider at the back of machine to cover the front of handle tube and a outer guider outside the inner guider to cover the back of handle tube, while the inner and outer guiders have protective element to avoid their damage caused by the friction between them and handle tube.

把手由手握部和可调整长度的把手导管构成；机身形成有把手安装部，并内置多个部件而过滤空气中异物；固定插座将把手导管固定在机身上；把手导向在机身的一侧引导把手导管移动。把手导向由在机身后面包住把手导管前面的内侧导向和在内侧导向外侧包住把手导管后面的外侧导向构成。这样的内侧导向和外侧导向还配备保护部件，防止内侧导向和外侧导向与把手导管摩擦而受到损伤。

One DHL water-fire tube boiler with angular tube structure has been introduced,which is a new type boiler improved from DZL water-fire tube boiler with upper or lower shell. It has characteristics of both DHL angular tube type water-tube hot water boiler and DZL water-fire tube hot water boiler.

介绍了一种采用角管结构的DHL型水火管热水锅炉结构特点，它是继DZL型上置锅壳的水火管锅炉和DZL型下置锅壳的水火管锅炉之后出现的一种新型水火管锅炉，它兼具DHL型角管结构水管热水锅炉和DZL型水火管热水锅炉的特点。

The highest heat transfer coefficient for air flowing in the nine 3-D IFT with staggered arrangement fins is No9 tube. In the turbulent region, the heat transfer coefficient of No9 tube is a factor of 10.36 compared with smooth tube, and its thermodynamic performance coefficient is as high as 6.49; The average Nusselt number in the most superior 3-D IFT with staggered arrangement can be increased by about 1.04 times in the laminar flow, and 6.38 times in the transitional flow as compared with that in the smooth tube. The friction factor between fluid and tube wall can be 0.96 times in laminar flow, and 12.68 times in transitional flow as compared with that inside the smooth tube.

在进行实验的九根肋叉排三维内肋管中，换热最强的No9管与光管相比，在紊流区的换热强化比平均可达10.36倍，阻力增大比约为4.06倍，其热力性能系数高达6.49；在过渡流区的换热强化比平均可达6.38倍，同时阻力增大比约12.68倍；在层流区的换热强化比为1.04倍，而阻力增大比仅约0.96倍。

Finite element method and nonlinear regression method is used to discuss the relationship of Y shape steel tube joint's local translational displacement and local translational stiffness to the ratio between the width and the thickness of main tube, ratio of width and thickness between branch tube and main tube and included angle between branch tube and main tube's the axial directions.

本章分析了Y形方管节点的平动位移和平动刚度随主管宽厚比、支主管宽度比、支主管厚度比和支主管轴线夹角等参数的变化关系，并从各回归方程及回归系数的显著性检验可知回归方程的准确性。

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我们完全可以满足你方的需求。

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我们普遍有大祸降临的感觉。