管針針桿 的英文怎麼說
中文拼音 [guǎnzhēnzhēngǎn]
管針針桿
英文
tubular stem-
The new unit adopts hollow sucker rod working with pump and as fluid passage instead of conventional sucker rod, and uses a new hanger to fix the one - piece barrel rod pump on the casing wall, improving the operation stability of the subsurface pump
針對這種情況，大港油田新世紀機械製造有限公司研製成功一種新型無油管採油裝置，這種裝置以空心抽油桿代替實心抽油桿帶泵工作併兼作出油流道，還通過一種新型懸掛器將整筒抽油泵固定在套管壁上，提高了抽油泵的工作穩定性。Countermeasures are put forward ， such as making reasonable selection and matching of the rod string ， strengthening inspection ， using special sucker rod ， applying tubingless production technology ， installing anti - reverse unit ， mounting overload protection system ， and so on
針對上述原因，制定了合理選配桿柱，加強檢測，採用專用抽油桿，應用無油管採油技術，安裝防反轉裝置，設置過載保護系統以及加強現場施工管理等技術對策，提高了抽油桿柱的可靠性，有效地避免了桿柱斷脫事故的發生。By adding a third harder layer of rubber under the tread at the base of the knobs, maxxis is able to provide less knob flex for longer tread life, and a more stable ride in hard off - camber landings. the 42a crown offers unparalleled braking performance ; the 40a shoulder knobs grip corners without rebounding to bounce the tire off hard obstacles ; and the 70a base layer lessens knob flex, decreasing rolling resistance and increasing tire wear life
利用可調式高精密滾針軸承結構來降低滑動的摩擦力，創造不俗的避震效果此前叉的內導桿使用高強度的鉻鉬合金鋼製造，而上首管與肩蓋部分則是由3軸鍛造成型之6061鋁件，讓其整體結構強度足以通過一般的測試規范前叉的重量只有1 . 2kg ，可以廣泛運用在中高價位的自行車上。Optimization design for spatial truss structure of concrete filled steel tube is studied in this dissertation. on the basis of theory of structural optimum design and behavior of poles in structure of concrete filled steel tube, the optimization mode is built, and programming of static calculation for truss structure and optimization algorithm with discrete variables is developed by using language of fortran
本文針對鋼管混凝土空間桁架結構的優化設計問題進行了初步研究，根據鋼管混凝土結構中桿件的受力特點，結合優化設計理論，建立了鋼管混凝土空間桁架結構的數學模型，運用fortran語言編制了桿系結構靜力計算程序和基於離散變量的優化演算法程序。Though originally meant for automotive springs, gaskets and the like, the patented metal compositions are too costly for anything other than specialized premium applications such as microscrews, shape - recovery eyeglass frames ( in production ), medical implants and catheters, heat - tolerant springs for spacecraft, even long - hitting golf clubs
雖然這項發明原來是針對汽車的彈簧、墊圈和類似的零件，但是此種專利金屬材料太過昂貴，只能用在非常特殊的高級零件，例如微形螺絲、能自動恢復形狀的眼鏡框（已量產） 、醫療用植入物及導管、太空船用的耐熱彈簧，甚至是揮長桿用的高爾夫球桿。分享友人