螺紋根 的英文怎麼說
中文拼音 [luówéngēn]
螺紋根
英文
root of thread-
Undercuts and runouts for screw threads - inch screw threads
螺紋根部和收尾規范.第1部分:英制螺紋In the construction of the tanghe inverted siphon on mid - roule of south - to - north water transfer project, some reliable construction processes and techniques are applied such as belt conveyor with three - rail gantry, construction with combined steel formwork, straight screw sleeve connection for reinforcement and the crushed stone - planting method etc., by which better construction effects are obtained
摘要南水北調中線唐河倒虹吸工程項目施工中，根據工程特點，採用了三軌門架式皮帶布料機、鋼模板聯體施工、鋼筋滾壓直螺紋套筒連接、混凝土施工縫栽石法等可靠的施工技術和施工工藝，取得了較好的效果。In order to find the detecting signal characteristics of all kinds of flaws for ect and ac - mfl, itestablished the signal analysis method based on rectangular flaw, which was validated throughthe experimental research on ect and the emulational research on ac - mfl for different shapeand dimension flaws. the method was explained that a flaw with an arbitrary shape can berepresented as a set of flaws with the simplest rectangular shape. as the synthetic application of these researches, the problem of defect detection of bolt wasresearched
為實現螺紋區域中的缺陷檢測，提出了提取局部極大值的缺陷識別方法;並根據位置的不同將缺陷分為螺桿結合部缺陷、螺紋區域缺陷以及螺紋尾部缺陷三類，對每類缺陷的信號特點進行了分析，給出了缺陷檢測的判據，並通過實驗驗證了識別方法的可靠性;最後對螺栓頭桿結合部的缺陷檢測進行了實驗研究，並根據信號特點建立了相應的缺陷檢測方法。With certain shapes of nozzle or canula, elongated caps are made to cover both canula and threaded portion, and seal the canula at its top
根據管口和導管的不同形狀，可以製造細長的管蓋以覆蓋導管和螺紋部分，並在頂部封住導管。Based on ansys, this paper studies stress concentration on single notch of eight kinds of high strength bolts used in grid structure, obtaining their stress concentration coefficients, discussing the effect of ascending angle, bottom radius of screw thread and bolt - ball on stress concentration, introducing their effect coefficients of a1, a2, a3, putting forward the formulae of stress concentration coefficient
本文以ansys有限元軟體為研究手段，針對網架螺栓球節點的8種螺栓規格進行單缺口應力集中分析，定量求得相應的應力集中系數k _ t ；論述了螺紋升角、螺紋牙根圓角半徑r及球栓直徑比d / d對k _ t的影響，並引入相應的影響系數_ 1 、 _ 2及_ 3 ，最終提出了應力集中系數k的計算公式。Thread run - outs and thread undercuts for external threaded fasteners
外螺紋緊固件用退刀螺紋和螺紋根切Clinical study on durafill accompanied with threaded post used in restoration of bicuspid
光固化樹脂加螺紋根管釘修復前磨牙的臨床研究The system is constructed by slotted threaded rods or rodplates connected by nuts to angled pedicle screws
這系統由有螺紋的鋼柱或鋼板-柱組合及各種不同角度的椎弓根鋼釘所成。Dimensions process thread, stem length and diameters can be arranged flexibly matching into your application
尺寸加工螺紋桿長和直徑都可以根據您的應用靈活調整。According to the characteristics of the plexiglas, using the principles of the stress field intensity ( sfi ), a local stress approach for the evaluation of the fatigue life of the plexiglas structures is proposed
根據有機玻璃特點，利用場強法原理，建立了有機玻璃裂紋形成壽命的局部應力估算方法，採用該方法估算得到的玻璃螺栓孔處的疲勞壽命與邊緣連接件疲勞試驗結果吻合較好。End connections ? choice of flanged, socket weld or threaded ends for piping flexibility
連接埠-根據管道特點選擇法蘭、承插焊或螺紋連接埠。The flexible pipe length, thread specification can be made specially according to request, such as npt thread, metric thread etc
撓性管長度，螺紋尺寸可根據用戶需要特殊加工。如npt螺紋，公制螺紋等。Abstract : a method was put forward for the detection of the fatigue cracks at the thread roots of a drill pipe by using ultrasonic wave. the specific detection probes were designed. simulated cracks were detected. the results show that the probes can effectively detect the cracks whose depth is more than 1mm and the detection errors of the depth and length of the cracks are less than 1mm and 3mm respectively
文摘:鉆桿螺紋根部疲勞裂紋是鉆桿鉆井服役中產生的常見缺陷類型，是鉆桿螺紋發生斷裂的重要根源.本文介紹了鉆桿螺紋疲勞裂紋超聲檢測原理，設計了專用超聲檢測探頭和檢測裝置，給出了檢測試驗結果，證明了鉆桿螺紋疲勞裂紋超聲檢測的可行性和實用性And the major parts of the dissertation are as follows : 1. some different empirical formulations on predicting the in - tube boiling heat transfer coefficients are examined. 2
對r290和r404a ，分別根據搜集到的光管、內螺紋管內的沸騰換熱系數實驗數據，篩選出了相應較好的理論預測模型。分享友人