是指标明一区域外缘的明确界线。
Boundaryb is a precise line marking the outer limits of an area.
请注意，纹波对边外缘的光碟是从录音的优势，围绕轮胎。
Note that the ripple on the outer edge of the disc is from the taped edges around the tire.
目的：探讨腰椎上关节突外缘的形态特点及其与椎弓根中心的关系。
Objective: To study the quantitative relationship between the lateral margin of the superior facet and the pedicle center of lumbar vertebrae.
在这样一个位于（太阳系可居住区）外缘的星球上，才能保有生命之水，才能维持栖息地。
On a planet like that, on the outer edge, you will have reservoirs of life, and there will be habitats that will persist.
陨坑内部似乎显露出两种不同类型的基岩，即外缘的浅色岩石和内沿的深色岩石。
The crater seems to have exposed two different types of bedrock, the light-toned rock toward the outer edge and the darker rock on the inner edge.
采用弧形外缘的轴承可以减小胶层间应力的急剧变化，能够延长轴承的使用寿命。
The dramatic changes of node stresses between rubber layers were decreased in the bearing with an arc profile, which could improve the life of the elastomeric bearing.
结果表明，大尺寸的非金属夹杂和背帽外缘的点焊是引起泵轴过早断裂的主要原因。
The fracture of the pump shaft is mainly caused by large size non metallic inclusions and point welding between the lock nut and the pump shaft.
再一次分离出来的油份，通过填料过滤层外缘的凹槽，亦将由回油管回到底部的油室。
Once again the separated oil share, through the outer packing filtration layer grooves, also will be back to the bottom of the tubing oil room.
在1867年制作诺德章牌时，他第一次放弃了沿章牌外缘的突起的边，使得图像和背景成为雕刻的组成部分。
For the first time in the Naudet medal in 1867, he abandoned the edge along the medal rim, the graphics and the background became part of the sculpture.
建立一个模型来表现热量在不同形状的烤盘的外缘的分布——包括从矩形到圆形以及介于矩形与圆形的过渡形状。
Develop a model to show the distribution of heat across the outer edge of a pan for pans of different shapes - rectangular to circular and other shapes in between.
我沿着跑道的外缘走。
他用手指顺着她的下巴外缘抚摸。
每个电机至少有六块薄片，两两相对，相对的薄片为一组，肌肉被安装在电机外缘和中央传动轴之间。
With at least six per motor, working as opposing pairs, these muscles are positioned between the outer rim and the central driveshaft.
犹如惊弓之鸟的投资者们纷纷转向欧洲一些外缘债券市场，如瑞典，丹麦，英国。
Nervous investors are jumping instead into some of Europe's outlying bond markets, such as Sweden, denmark-and Britain.
这两艘飞船是目前距离最遥远的人造物体，远在日光层外缘——由太阳产生的，环绕太阳系的巨型泡状体。
The two spacecraft are the most distant human-made objects, out at the edge of the heliosphere — the bubble the sun creates around the solar system.
由于反射阳光，(火山)泥流的外缘也染上银色，使火山中心正在不断累高的山口部分的纹理更加突出。
Reflecting sunlight also colors the outer edges of the mudflow silver and highlights the texture of the growing mound over the vent at the center of the volcano.
菲茨帕屈克告诉BBC新闻台：“我们给奥斯卡嵌入的金属与外缘装置，在其上皮肤能够生长成极其坚固的骨质，这正是给奥斯卡的假肢技术的真正突破所在。”
"The real revolution with Oscar is [that] we have put a piece of metal and a flange into which skin grows into an extremely tight bone," Fitzpatrick told BBC News.
丝绸之路其实有数条支线，它们分别沿着环境恶劣、不适合人类居住的塔克拉玛干沙漠外缘，穿越不同的绿洲。
Skirting the edges of the harsh and inhospitable Taklimakan desert, the Silk Road actually had several different branches, each passing through different oases.
透过淡淡的外缘螺旋腕可以看见背景星系。
Background galaxies are visible through the faint outer arms.
船坞外缘贴着一圈旧轮胎，用来保护进坞的船只。
视野深度是很多微小水珠拍摄的关键，中心区域清晰，外缘平滑模糊。
Depth of field is a key aspect of many droplet shots, with a clear central area and a hazy smooth outer edge to the shot.
现象：你的角膜的外缘有一个白圈。
What you see: There's a whitish-colored ring along the outer edge of your cornea.
NASA的旅行者1号已到达太阳系外缘。
NASA's Voyager 1 spacecraft has reached the outside edge of the solar system.
他把他过去20年的时光用来尝试做一件事情：乘坐氦气球飞到大气层的外缘，然后从那里纵身一跃，跳回地球。 为实现这个目标，20年来他已花费2000万美元。
He has spent two decades and nearly $20 million in a quest to fly to the upper reaches of the atmosphere with a helium balloon, just so he can jump back to earth again.
那位伐木工人在森林的外缘有一间小屋。
The woodcutter had a little house on the fringes of the forest.
哦，不完全是这样。我看艺术家们在这里没有什么环境，哪一个都没有。他们更像一层薄薄的外缘。
Oh, not exactly. I don't know that the arts have a milieu here, any of them; they're more like a very thinly settled outskirt.
将密封圈的外缘和密封唇上涂上一层薄薄的凡士林。
Thinly coat outer circumference and sealing lip of sealing ring with vaseline.
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