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introduction：Abbes principle of length Abbe comparator principle The Hadamard transform Hadamard transformation Leveling accuracy setting accuracy Shore station，*Fixed table base station Submerged rock reef Target path engineering survey target road engineering survey Semiconductor laser semiconductor laser Half day tide harbor semidiurn
2015-02-13 Reading quantity 2928
introduction：1、cut open Cutting is a stamping process in which the material is partially separated along an open profile rather than completely separated。The material that is cut and separated is located or substantially located before separation The plane were on。 2、cut edge Trimming is the use of a die to trim the edge of the forming process，Give it a certain diameter、A pressing process of a certain height or shape。 3、cut The tongue Tongue cutting is a pressing process in which the material is partially separated along the open contour rather than completely separated。Materials that are partially separated，Have the certainty required by the workpiece position，No longer on the same plane as before separation。
2015-02-13 Reading quantity 2797
introduction： Feng Ye mall clutch for you to report a piece of news—Porsche Release911 Turbo SLimited edition40car。 Comprehensive overseas media reports in911 TurboOn its 40th anniversary，Porsche launch911 Turbo SA special British edition as a souvenir，Limited release40car。The car starts on the British market150,237Pound sterling(About RMB159.8Ten thousand yuan)，Its higher than the standard version1Ten thousand pounds。 The new car is made by Porsche Private Customization DepartmentPorsche Exclusi
2015-02-13 Reading quantity 2894
introduction： ⑴Centripetal ball bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]Identification of Radial ball bearings in normal technical condition，therein、The outer ring raceway should be free of peeling and serious wear marks，And in the shape of a bright circular groove；All ball bearings should remain round，spotless、Cracks and flaking
2015-02-13 Reading quantity 1700
introduction： one.Broken axis problem in different hearts When the concentricity between the motor and the reducer is guaranteed to be very good，Motor output bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]All you get is the spin，It will run smoothly, too。However, the heart is different，The output shaft is subjected to input from the reducer
2015-02-13 Reading quantity 2881
introduction：Every type of bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]Envisage a common elimination process。If the operation is not when，Can protect the bearing，Shaft or shell，The need for noble maintenance。thereupon，Heavy and light industrial bearings have invested a small amount of profits。When absorbed into the once new or reformedNSKbearing[NSKbearing
2015-02-13 Reading quantity 1433
introduction：Tianjin Tanggu Watsi Valve Co., Ltd. pipe Jianjun After entering the new century，The idea of technological innovation and management innovation has penetrated into the vast number of machinery manufacturing enterprises，With the increasing market competition between enterprises、The continuous deepening of enterprise information construction and the continuous improvement of the overall goal requirements for sustainable development of enterprises，The construction of enterprise informatization has reached a certain level and is one of the necessary means。With the expansion of the role of computer information network，It brings information security problems，It will cause greater impact and loss to enterprises。According to theCSI／FBIInvestigation report
2015-02-13 Reading quantity 2894
introduction： cleanseKOYObearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]And related parts，（On already grease lubricatedKOYOBearing and both sides with oil seal or dust cover，Sealing ringKOYOBearings need not be cleaned before installation。） Check the size and finish of the relevant parts Installation method
2015-02-13 Reading quantity 1447
introduction： Technical index： purity≥99.9995% dew-point≤-70℃ Oxygen content≤5ppm Carbon dioxide content≤5ppm Pure gas pressure：0.05-0.8MPa peculiarity： The oxygen content of raw gas is less than5000ppmWhen using carbon carrier deoxidizer，No hydrogen is required，Carbon fiber is both a carrier and a reducing agent，The true connection removes the inert gas、Oxygen in nitrogen，High deoxidation capacity，Good depth，Suitable for applications without hydrogen source。 DCZdWorking principle diagram of gas purification equipment
2015-02-13 Reading quantity 2997
introduction：beijing gangtie xueyuan Beijing Institute of Iron and Steel Beijing University of Iron and Steel Technology It is a key university specializing in mining, metallurgy and materials engineering1952Originally from Beiyang University、Tangshan Engineering College, North Jiaotong University（See Tangshan Road Mining School）The mining and metallurgical engineering departments of five schools were merged in Beijing。to1983years，Owned by all13Individual system、23major，Teacher1342people，One member of the Academic Degrees Committee of The State Council，science
2015-02-13 Reading quantity 2789
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