Every tournament can be transformed into a diconnected tournament by the reorientation of just one arc . 每个竞赛图只通过一条弧的改向而转变为双向连通竞赛图。
A satisfactory approximation to monochromatic light can be obtained with a filter placed in front of the arc . 在碳弧前面放一个滤光片就可以得到令人满意的近单色光。
Elsewhere, two plates may shift toward each other and converge along a deepsea trench and island arc . 在别的地方，两块板块又可能相向移动而沿着深海沟和岛弧逐渐聚合。
His black open palm swept upward in a swift narrow arc and smacked solidly against her face . 他张开着的黑色手掌向上飞起，迅速地绕了个小弯，啪的一声扎扎实实地打在她的脸上。
It is this release of energy that maintains the arc often seen when a switch is opened in an inductive circuit . 在电感电路中，打开电键时，就有这种能量释放，引起经常所见的电弧。
They would shout at the pretty rainbows that would arc down to the earth, seeming never very far away . 他们冲着那从天际弯弯地挂向地面的，看来好象伸手可及的美丽的彩虹，大声喊叫。
Everyone will please step aside so we can describe an arc around the lady and see that no pearls are over-looked . 请大家避开一点，好让我们在这位太太周围画个圈儿，不让一颗珍珠失落。
He put the tip of the blade into gus's shirt and then made an arc with his arm, as though cutting a circle . 他把尖刀伸进格斯的衬衫，随手用胳膊划了个弧圈，仿佛要圆圆地剐下一块肉来。
The etched section also reveals that multiple weld passes were made over the top of the original submerged arc weld pass . 从酸蚀断面还可以看出：在原自动埋弧焊的上面覆盖有多层焊道。
He found franklin, for instance, trimming arc lamps in an ipswich factory for a few shilling a week . 例如，他发现富兰克林在伊普斯威奇市的一家工厂里做装饰弧光灯的工作，一星期只赚几个先令。
