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This paper discusses the configuration and the action principle of a new variable displacement of double-action vane pump, which consists of a floating block .

本文介绍了一种基含有浮动块的新型平衡式变量叶片泵的结构和工作原理，通过计算进行了流量输出对比，证明该泵应用在汽车转向助力泵等工况，是一种较有应用前景的新型叶片泵。

Two more chains drive the oil pump and the two high-pressure pumps actuate the common rail injection system.

另外两个链条驱动机油泵和两个高压泵开动的共轨喷射系统。

It is the micro-external gear pump that the key component of the system, which the speed may reach 3,700 Rpm, the instantaneous pressure may reach 35 MPa as well as the addendum circle diameter only has 14 mm.

系统中的心脏和动力源就是微型外啮合齿轮泵，它的转速可达3700 Rpm，瞬时工作压力可达35 MPa，其中齿轮的齿顶圆直径只有14 mm，同时它也是影响该系统合格率的重要部件之一。

Overseas low-pressure gear pump gear often used square structure,水力控制阀, that is the tooth width is equal to addendum circle diameter.

国外低压齿轮泵的齿轮常采用方形结构，即齿轮的齿宽等于齿顶圆直径。

Pitch circle diameter: d = mz = 3X12 = 36 Tooth crown heights: ha = m (f0 + x)= 3X (l +0.5)= 4.5 Tooth High: hf = m (f0 + cx)= 3X (l +0.25-0.5)= 2.25 Tooth full height: h = ha + hf = 4.5 +2.25 = 6.75 Addendum circle Chemical pumps diameter: Da = d +2 ha = 36 +2 X4.5 = 45 Fixed string tooth thickness: Sxn = m (π/ 2 * cos2a + xsin2a)= 3X (1.387 +0.6428 X0.5)= 5.125 Fixed string of high gear tooth thickness measurement: hxn = m (π/ 8 * sin2a + xsin2a)= 3X (0.7476X0.117X0.5)= 2.42 Modulus coefficient x0.5 m3 O20 ° pressure angle tooth thickness Sxn5.12 fixed string Addendum Coefficient string f1 fixed gear tooth thickness measurement most high hxn2.42 Teeth z12 2, shaft wear and tear maintenance: Axis gear pump wear is mainly because with the support roller shaft at both ends between the friction and wear, so that smaller shaft diameter.

分度圆直径：d=mz=3X12=36 齿顶高：ha=m（f0+x）=3X（l+0.5）=4.5 齿根高：hf=m（f0+c-x）=3X（l+0.25-0.5）=2.25 齿全高：h=ha+hf=4.5+2.25=6.75 齿顶圆直径：Da=d+2ha=36+2X4.5=45 固定弦齿厚：Sxn=m（π/2*cos2a+xsin2a）=3X（1.387+0.6428X0.5）=5.125 固定弦齿厚测量用齿高：hxn=m（π/8*sin2a+xsin2a）=3X（0.7476X0.117X0.5）=2.42 模数m3变位系数x0.5 齿形角o20°固定弦齿厚Sxn5.12 齿顶高系数f1固定弦齿厚测最齿高hxn2.42 齿数z12 2、轴的磨损维修：齿轮泵中轴的磨损主要是因为轴两端与支撑滚针间的摩擦磨损，使轴径变小。

In addition to determining that humans use chemosignals to attract one another, the findings could one day be used to create new therapies to correct hormone imbalances—most notably alternatives to cortisol replacement, which is used in treat maladies such as Addison's disease (in which the adrenal glands fail to pump out enough cortisol, causing muscle weakness, weight loss and low blood pressure).

除了确定人类确实可以用化学信号彼此吸引，这一发现还将有助于荷尔蒙失衡新疗法的开发——值得一提的是，这类新疗法可能取代皮质醇替代疗法来治疗阿狄森症（阿狄森症：肾上腺不能分泌足够的皮质醇，从而引发肌肉乏力，体重减轻和低血压等症状）。

Here's one of the most spectacular bridges in the world that delivers quite a pump of adrenaline.

作为世界上最壮观的桥梁之一，它可以给你带来十足的刺激。

With the use of two light emitting devices 302, 303, the amount of pump light is advantageously doubled.

使用两个发光装置302、303，有利地使泵浦光的量加倍。

It was an aquarium,complete with an air pump to aerate the water.

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But my most memorable gift was not atoy.It was an aquarium,complete with an air pump to aerate the water.

但最让我难忘的礼物不是玩具，而是一个带空气泵、能通气的鱼缸。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。