裂頭類 的英文怎麼說
中文拼音 [liètóulèi]
裂頭類
英文
dibothridiata-
For all hair types. 8oz. nettle is the core ingredient to promote groth, strength and she, and to eliminate split ends
所有類型的頭發.毛.蕁麻是核心要素，以促進格羅特，強度，而她，並消除分裂結束The highlights of this paper include : hoop toughness criterion for longitudinal heat checking of tool joint was introduced firstly ; failure criterion for crescent - shaped wear casing was established according to the results of full - scale collapse tests ; new - typed alloy for hardbanding of tool joint was developed, its property has showed good performance in the tests
本文的主要創新點在於：以現場失效案例分析為基礎，提出了鉆桿接頭縱向熱裂的橫向韌性判據；通過對已磨損套管的實物擠毀試驗研究，確定了不均勻磨損套管的擠毀失效準則；設計出了具有獨立知識產權的鉆桿接頭硬化帶用新型耐磨減摩合金的成分，經實驗室試驗表明其性能可以達到或超過國外同類產品。According to these, the paper put forward some countermeasures : select low carbon steel or low metal alloy steel with lower intensity, like 20r steel ; while welding, adopt strict craft measures with lower welding heat to input ; after jointing, proceed the whole hot dissolving on time ; control each welding joint with hardness hb 185 ; add 0. 25 % water into the liquid ammonia as decay eclipse ; enhance checking in operation, repairing equipment in time through regular interior and exterior checking
針對上述原因提出了防止氨冷器類臨氨壓力容器產生應力腐蝕裂紋的對策：選用強度稍低，但抗裂性較好的低碳鋼和低合金鋼，如用20r鋼製造；焊接時應採用嚴格的工藝措施和較低的焊接熱輸入量；焊后應及時進行整體消除應力熱處理；控制焊接接頭各區硬度hb 185 ；在液氨中添加0 . 25 %的水作為緩蝕劑；在運行中加強檢查，及時進行停車檢修時的內外部檢查和定期檢驗。Anthropologist pierre - francois puech of the university of provence based his belief on a fracture he found on the skull ' s left temple. mozart, he theorized, may have sustained it in a fall, and that would help explain the severe headaches the composer was said to have suffered more than a year before his death. austria has designated 2006 a mozart jubilee year, with dozens of events in salzburg, vienna and elsewhere to commemorate his 250 birthday
普羅旺斯大學的人類學家皮埃爾弗蘭科斯在莫扎特頭骨的左太陽穴上發現了一條裂縫，由此，他推斷，這可能是由莫扎特摔跤所致，同時，這也為莫扎特逝世前困擾他一年多的嚴重頭痛病提供了解釋。Anthropologist pierre - francois puech of the university of provence based his belief on a fracture he found on the skull ' s left temple. mozart, he theorized, may have sustained it in a fall, and that would help explain the severe headaches the composer was said to have suffered more than a year before his death
普羅旺斯大學的人類學家皮埃爾弗蘭科斯在莫扎特頭骨的左太陽穴上發現了一條裂縫，由此，他推斷，這可能是由莫扎特摔跤所致，同時，這也為莫扎特逝世前困擾他一年多的嚴重頭痛病提供了解釋。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分享友人