friction head 中文意思是什麼
friction head
解釋
磨擦落差, 磨擦水頭-
The penetration test study the disturbance of soil in difference location. by using finite element method, the paper study the stratum movement and the earth surface deformation caused by pipe jacking, analysis the construction parameter such as head pressure, deflexion, friction force impact on earth surface deformation, give the distributing rule and range of additional soil pressure in soil
採用有限元計算分析的方法，對頂管施工引起的地層運動及地表位移進行研究，分析了機頭土壓力、機頭偏斜、摩阻力等不同施工參數對地表變形的影響以及附加應力在土中的分佈規律和影響范圍。 -
Dot matrix 9 pin printer head - friction type paper feed
9針點陣式收據印表機 -
A new method for studying friction factor of head loss
沿程水頭損失系數研究的一種新方法 -
A piece of rough paper is stuck on the side of the box, and when a match is rubbed against it, friction heats the head of the match, making it burst into flame
在火柴盒的邊上貼上張糙紙，當火柴與其相擦時，摩擦使火柴的頭發熱，使其燃燒起來。 -
A friction match with a large head capable of burning in a wind
耐風大頭火柴一種能夠在風中燃燒的通過磨擦點火的大頭火柴 -
Considering the engineering of trail pile in hubei jingzhou yangtze river highway bridge, the construction process of deep cast - in - place pile under pebble geological structure, the limit load - bearing capacity of single pile, side friction stress and head drag are researched in this thesis deeply
論文結合湖北省荊州長江公路大橋的試驗樁工程，深入研究了江漢平原地區卵石地基深鉆孔灌注樁的施工工藝、單樁極限承載能力、樁側摩阻力和端阻力。 -
First super - low specific - speed centrifugal pump has a long and narrow flow passage for its high head and low capacity, and the power absorbed by disc friction is too high, so the efficiency is very low ; secondly the diffusion of flow passage is so high, that the reserved flow often emerges at the inlet and outlet of impeller. therefore the h ~ q characteristic curve is often hump - shaped, and at the low - capacity operating condition the instability often occurs ; thirdly the centrifugal pump at high - capacity operating condition is easy to overload because the n ~ q curve appears a rising trend
首先由於它的揚程較高、流量較小，所以它的流道狹長，圓盤摩擦損失較大，效率相對較低；其次由於它的流道擴散較嚴重，易在葉片進口產生迴流和在出口產生脫流，揚程流量特性曲線易出現駝峰，在小流量工況下易產生不穩定現象；第三，由於其功率流量曲線呈現上升趨勢，在大流量區運行時電機易過載。 -
The crucial technologies of highly - displacement well mainly include torque / friction and wellbore trajectory control tool, and these technologies require rock bit have the following characteristics : having gage protection ability, long axletree lifespan, wear - resisting shirt - tail and head o. d., and high - temperature - resistant sealed system, etc
大位移井的關鍵技術主要有扭矩摩阻和井眼軌道控制工具，這些技術要求鉆頭具有以下特點：具有良好的保徑能力，軸承壽命長，掌尖和掌背部位耐磨損，密封系統耐高溫等。 -
Collapsing the elbow across the body during the underwater propulsive phase of the stroke - if the elbow is dropped during the propulsive phase of the stroke, the head of the humerus is, again, rotated into the deltoid causing friction and tedonitis, and / or the scapula is pushed against the rotator cuff muscles, causing pain or possible tissue damage
在劃臂的「抓水」階段，手臂徑直抓水或過分用力一如果在劃臂的「抓水」階段，手臂太直或過分用力，肱骨頭就會旋進三角肌引起肌腱炎，肩胛骨也會擠壓軸轉肌而引起肌肉疼痛或組織損傷。
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