斷缺螺紋 的英文怎麼說

中文拼音 [duànquēluówén]
斷缺螺紋 英文
slipped thread
  • 斷 : Ⅰ動詞1 （分成段） break; snap 2 （斷絕;隔斷） break off; cut off; stop 3 （戒除） give up; abstai...
  • 缺 : Ⅰ動詞1 （缺乏; 短少） be short of; lack 2 （殘缺） be missing; be incomplete 3 （該到而未到） be ...
  • 螺 : 1. [動物學] （軟體動物） spiral shell; snail; conch 2. （螺旋形的指紋） whorl （in fingerprint）
  • 紋 : 名詞（花紋; 紋縷兒） lines; veins; grain
  1. Abstract : factors causing the failure of the rod string in a screw pump well include rod with minor od being used ， defects in the rod body produced in manufacturing and service ， excessive torque caused by plugging and reactive torque on the rod string ， and excessive shearing stress on the rod thread

    文摘:造成螺桿泵採油井抽油桿桿柱斷裂、脫扣和擼扣的主要原因有桿體外徑選擇偏小，桿體製造或使用過程中產生缺陷，堵塞扭矩過大，反扭矩大於螺紋聯接扭矩以及抽油桿螺紋牙受剪應力過大等。
  2. 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
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