down stroke
英 [daʊn strəʊk]
美 [daʊn stroʊk]
下冲程（活塞）；活塞向下行程
双语例句
- He crouched down to stroke the dog.
他蹲下来抚摸他的狗。 - "ENGINE TORQUE When the piston is moving down on the power stroke, it is applying torque to the engine crankshaft ( through the connecting rod)."
发动机扭矩：当活塞处于做功行程而向下运动时，所产生的扭矩通过连杆传递给发动机曲轴 - The piston travels down on the intake stroke, up on the compression stroke, down on the power stroke and up on the exhaust stroke.
进气行程，活塞下行；压缩行程，活塞上行；做功行程，活塞下行；排气行程，活塞上行。 - You have to bend down quite far to stroke the tousled and unique spiky hair on the little dog's hat, which made it already on the company logo in first round.
你必须垂很远中风的有些零乱的头发和独特的有刺的小狗狗的帽子，这使得该公司已经提出标识在第一轮。 - Then one of them stooped down to stroke it, but the Serpent raised its head and put out its fangs and was about to sting the child to death.
他的其中一个小孩便弯下身抚摸蛇，但是蛇升起头伸出毒牙眼看就要将小孩致命地咬下去。 - With the adoption of the dollar, inflation will come down at a stroke. Exchange rate instability will disappear.
实行美元化可以一次性抑制通货膨胀，兑换汇率的不稳定性会消失。 - During the breaststroke underwater pullout, the arms pull DOWN during the power phase, and then arms recover back UP to start the first stroke.
蛙泳水下蹬壁滑行时，手臂在蹬壁出发后要向下拨水，然后手臂恢复开始第一次蛙泳手划水。 - The main causes of side-abrasion of a sucker rod in polymer holes are analyzed: It is due to the resistance during down stroke and normal force attached by the polymer.
聚合物驱井中抽油杆偏磨是由抽油杆下冲程时的下行阻力与聚合物施加给抽油杆的附加法向力引起的。 - Great impact on net happened during down stroke.
下冲程的发电现象对电网造成很大冲击。 - Seen in one of them are a soldier of the Korean People's Army and a member of the Worker-Peasant Red Guards determined to crush down at a stroke the U.
说得很清楚，一个图案是“朝鲜人民军士兵和工农赤卫队成员决心粉碎美帝对朝鲜的侵犯”，以及“朝鲜人民决心清算日本反动派的无可抵赖的罪行”。 - Wide sleeves, tears stream down from a stroke.
宽大的衣袖，从此泪流不干。 - When wells run at one or some of the above states, and the practical down stroke axial load of the plunger is greater than the critical axial load, the wear of rod string and tubing will take place.
当抽油杆柱在上述一个或几个条件共同作用下达到偏磨临界条件时。杆管将产生偏磨。 - The formula for calculating the liquid shock load in the low sinking depth wells was set up, and the formula for the axial load in the down stroke of the plunger was established.
建立了供液不足油井液击力的计算公式，改进了柱塞下行阻力的计算方法。 - Two different approximate functions with the up and down stroke of the piston are integrated to more accurately obtain unsteady flow velocity.
通过对活塞上、下冲程各自近似函数的积分，准确地确定了非稳定流动速度。 - This technique eliminates the tube in conventional mechanical lifting, takes hollow rod as the transmission medium and oil flow channel and discharges fluid during down stroke.
该项工艺省去原机械举升中的油管，利用空心杆作为传动介质和油流通道，下冲程挤压排液。 - Prospects of Study on Roles of Inducing Activation of Down-regulation Cerebral Zone by Traditional Chinese Medicine in Rehabilitation of Cerebral Functions After Ischemic Stroke
中医药诱导下调脑区激活对缺血性中风后脑功能康复作用的研究展望 - On the down stroke of the pump, the outer and inner rings provide a fluid passage, and on the upstroke, they play the role of sealing.
两活塞环在下冲程时提供进液通道，上冲程时起密封作用。 - On the down stroke of the piston, the flow rate decreases with time, the trend is close to the exponent decline curve.
活塞下冲程的流量随时间逐渐减小，其变化趋势近似于指数曲线。 - The Magnetic Field Distribution in Buildings with Separate Lightning Down Conductors during a Direct Lightning Stroke
有独立引下线建筑物遭雷击时室内的磁场分布 - When the pump cylinder could not be filled with enough liquid, the liquid shock will occur, and the liquid shock load will make the down stroke axial load of the plunger increase.
当油井供液不足时，柱塞下冲程时泵内将产生液击，并加大柱塞下行阻力； - Deformation of helical buckling appeared on rod during down stroke is also analyzed.
同时分析了下冲程抽油杆所产生的螺旋弯曲变形。 - Second established the force model of sucker rod and the resistance calculating model on up and down stroke, we can conclude that the rheological property of produced liquid is an important factor to influence the hanging load;
其次建立了抽油杆柱受力模型及上、下冲程阻力计算模型，得出采出液流变性是影响悬点载荷变化的重要因素； - When the suction parameters of the wells increase, the critical axial load will decrease, and the down stroke axial load of the plunger will increase.
抽汲参数增加不仅导致抽油杆柱振动加剧，降低了杆管偏磨的临界轴向压力，而且也加大了柱塞下行阻力。 - The down stroke, due to the special structure of hydraulic feedback pump, the liquid column loads on the pump to increase rod load to help sucker rod smoothly downstream, resulting in the rod string design method is different from the ordinary pump.
由于液压反馈式抽稠泵的特殊结构，在下冲程时，液柱载荷作用在泵上，以增大悬点载荷帮助抽油杆柱顺利下行，致使其杆柱设计方法与普通泵不同。