The upper ring or rings are to prevent compression leakage; the lower ring or rings control the amount of oil being deposited on the cylinder wall.
上部的活塞环用来阻止压缩空气泄露；而下部的活塞环用来控制气缸壁上存留下来的机油数量。
The upper and lower rings have opposite charges, which allow the motor to contract and release, alternately tugging at the DNA like a ring of hands pulling on a rope.
高环和低环具有相反的电荷，这样的特性可以使其像拉绳子的两只手一样交替地拉住DNA。
A core regulating pad ring is padded on the lower ring of the thrust bearing, which can make the hook swing in any directions corresponding to the connecting cylinder.
在推力轴承下圈垫上调心垫圈，可使吊钩相对连接筒在任意方向上摆动。
Boys exposed to high levels tend to have a longer ring finger relative to their index finger, while in males exposed to lower levels, the two fingers tend to be a similar length.
暴露在高水平性激素环境里的男孩，其无名指相对于他们的食指更长，而低水平环境中，这两根手指趋近于等长。
Astronomers estimating the apparent age of the ring to be around 5, 000 years, also find more distant gas clouds perpendicular to the ring plane, seen here at the upper left and lower right.
天文学家推测该环的表面年龄大约在5000年左右，还发现垂直于该环形行星有着距离更远的气体云，图中就是左上和右下的部分。
Kernel space is flagged in the page tables as exclusive to privileged code (ring 2 or lower), hence a page fault is triggered if user-mode programs try to touch it.
系统内核所使用的内存空间通过特权码（privileged code，2级或者更低）来标记，以防止用户模式的程序访问到内核空间而发生页面错误。
To gauge precipitation, they looked at tree ring widths in lower-elevation oaks, which grow faster in years with higher levels of rainfall.
而为了测定降水量，他们则对长在低海拔地区的栎树的年轮宽度进行研究，因为这些树在雨水比较充沛的年份长得更快。
Sometimes the ring comes down and curves into the lower atmosphere.
有时这个环会下降，弯入在气层的下层。
A new study found that men whose index finger is longer than their ring finger are at lower risk to develop prostate cancer, according to the British Journal of cancer.
根据英国癌症杂志的最新研究发现，如果男人的食指长于他的无名指，则罹患癌症的几率要比无名指短的人要低。
The DLS magnetic separator is mainly composed of high frequency vibrating mechanism, ring, exiting coils, upper and lower yoke and varies ore buckets, water supplying devices.
磁选机主要由高频振动机构、转环、励磁线圈、上下铁轭及各种矿斗、供水装置等组成。
Put a attachment on conventional ring spinning frame, a lower torsion moment yarn (Nu-Torque TM yarn) was produced by this new spinning method.
通过在传统环锭纺细纱机上加装纺纱附件，研制出一种生产低扭矩纱（扭妥TM 纱）的新型纺纱方法。
Kernel space is flagged in the page tables as exclusive to privileged code (ring 2 or lower), hence a page fault is triggered if user-mode programs try to touch it.
内核空间被标记在页表中的独家特权代码(环2或更低)，因此一个页面故障被触发，如果用户模式的程序试图去触摸它。
Install new lower barrel, place new snap ring and new flange on the new lower barrel, fixed by bolt nut.
安装新埋管，把新卡环和新法兰套进新埋管里，用螺栓螺母与法兰固定。
Alar cartilaginous fibrous ring and alar cartilaginous muscular ring are very important anatomic structures to maintain the shape of the lower part of the nose.
鼻翼软骨纤维环和鼻翼软骨肌肉环是维持外鼻下端形态和鼻孔对称的重要解剖结构。
On platinum electrode, linear carbonate DEC, DMC and EMC have similar cathodic reduction behavior, but ring carbonate PC has lower cathodic currents than linear carbonates.
研究结果表明，铂电极上线性碳酸酯DEC、DMC和EMC的阴极还原极类似，而环状碳酸酯PC较线性碳酸酯难还原；
The so-called 'digit ratio' in this study refers to the length of the index finger divided by the length of the ring finger. The lower the ratio, the study suggests, the longer the penis may be.
研究中所提到的“数字比例”实际上就是食指的长度除以无名指长度后得到的数值，研究表明，该数值越低，可能就越长。
Upper and lower piston rings are arranged inside a piston gaseous ring groove, and openings on the two-piece piston rings are mutually staggered.
在一个活塞气环槽内设有上下二片活塞环，二片活塞环上的开口相互错开。
The balloon control-rings used in ring frames divide the spinning balloon into two parts:the upper one and the lower one.
环锭细纱机安装气圈环后将形成上下两段气圈。
A multitude of ring-shaped cracks and three water leakage points were discovered in the right side lower header of a boiler together with a cave-in of the boiler roof water-cooled wall.
锅炉右下集箱产生了很多环状裂纹和三个渗水点，同时顶棚水冷壁管塌陷。
Sometimes the ring comes down and curves into the lower atmosphere, causing strange electrical effects.
这个环有时会下降，弯入大气层的底层，结果引起了奇怪的电效应。
Although China's automobile production and marketing are lower than the ring, it still keeps the better developing momentum.
虽然中国汽车的产销环比回落，但却仍然保持了较好的发展势头。
The lower part of the ring button fixed on the bag is provided with a lock pocket.
固定于包上的环扣下部设有一锁兜。
Test results show that the life of ceramic ball bearing is lower than steel ball bearing under the same working condition, but the wear condition of its ring is better.
试验结果表明，在相同试验工况下，混合陶瓷球轴承的使用寿命低于全钢轴承，但是其沟道表面的磨损情况优于全钢轴承。
If either the number of sun or ring gear is not multiple of planet gear, system will run effectively, with lower impaction of tooth mesh in and out.
行星轮与内齿圈齿数不为行星轮个数的整数被时，轮齿的啮入、啮出对系统的冲击小，系统的效率高。
The cover is formed by covering an airtight waterproof film on a frame. The lower edge of the cover is provided with a sealing ring which can prevent the external leakage of hot gas.
用不透气不透水的薄膜材料覆盖在一个框架上形成罩子，罩子下边有密封环，可以阻止热气外泄。
The lateral dimension of the lower part is longer, for example twice as long, than the lateral dimension of the ring-shaped upper end.
第二下方部分的侧向尺寸较长，举例而言可为环形顶终端侧向尺寸的两倍长度。
The dusty reddish knot at the lower left of the blue ring probably marks the location of the original nucleus of the galaxy that was hit.
蓝环右下方带有红色的尘埃结很可能标志着原来被冲撞的星系的核心。
Though a bit difficult for chuck mounting and adjusting, it is easy maintenance and lower cost by means of the distributor ring bracket to avoid any contact with the power chuck.
使用配气盘支架，卡盘与配气盘不接触。虽然安装调整复杂点，但维护保养方便经济。
The results manifest that the dielectric-loading can lower the operating voltage of the ring-plane slow-wave structure. Good accordance was obtained between results by this method and that of CST-MWS.
计算结果与CST - MWS的模拟结果吻合良好，说明所提出的计算等效相对介电常数的方法和计算色散方程的方法对环板慢波结构是切实可行的。
The results manifest that the dielectric-loading can lower the operating voltage of the ring-plane slow-wave structure. Good accordance was obtained between results by this method and that of CST-MWS.
计算结果与CST - MWS的模拟结果吻合良好，说明所提出的计算等效相对介电常数的方法和计算色散方程的方法对环板慢波结构是切实可行的。
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