Velocity

(n.) Quickness of motion; swiftness; speed; celerity; rapidity; as, the velocity of wind; the velocity of a planet or comet in its orbit or course; the velocity of a cannon ball; the velocity of light.

(n.) Rate of motion; the relation of motion to time, measured by the number of units of space passed over by a moving body or point in a unit of time, usually the number of feet passed over in a second. See the Note under Speed.

校对:马蒂

• Rivers and pipes have their metres, so that now the velocity and volume of rivers and streams are measured and controlled, and floods prevented. 威廉·亨利·杜利特. 世纪发明.
• Fields, trees, and hedges, seemed to rush past them with the velocity of a whirlwind, so rapid was the pace at which they tore along. 查尔斯·狄更斯. 匹克威克外传.
• The speed with which sounds travels through the air, or its velocity, was first measured by noting the interval (54. 伯莎M.克拉克. 科学通论.
• Again, the experiments demonstrated that the force necessary to maintain at high velocity an apparatus consisting of planes and motors could be produced by means already available. 李贝. 西洋科学史.
• These jetties so concentrated the flow of waters into a narrow channel as to cause its increased velocity to wash out the mud and silt and deepen the channel. Edward W. Byrn. 十九世纪发明进展.
• Houses, gates, churches, haystacks, objects of every kind they shot by, with a velocity and noise like roaring waters suddenly let loose. 查尔斯·狄更斯. 匹克威克外传.
• I traveled with awful velocity for my errand was a race against time with death. 埃德加·赖斯·巴勒斯. 火星公主.
• Muzzle velocity, 2,900-foot seconds. 佚名. 神奇的知识之书.
• The greatest height to which water has been raised by the pumps that are one foot in diameter is 67·7 feet, with a velocity of 4,153 feet per minute. 弗雷德里克·科利尔·贝克维尔. 伟大的事实.
• In 1823 Asa Arnold of Rhode Island invented a differential motion by which the velocity of the bobbin is kept uniform. 威廉·亨利·杜利特. 世纪发明.
• The velocity and certainty of Mr. Bucket's interpretation on all these heads is little short of miraculous. 查尔斯·狄更斯. 荒凉山庄.
• The cotton passed through the two pairs of rollers, and its extension depended entirely on the difference in the velocity of the revolutions of the two pairs. 鲁伯特·萨金特·荷兰. 历史性发明.
• Atkinson,[445] What astonished the Allies most of all was the number and the velocity of the Republicans. 赫伯特·乔治·威尔斯. 世界史纲.
• Muzzle velocity, 1,750-foot seconds. 佚名. 神奇的知识之书.
• The quantity of water which flows through the trough each second depends upon the dimensions of the trough and the velocity of the water. 伯莎M.克拉克. 科学通论.
• Aristotle had held that two moving bodies of the same sort and in the same medium have velocities in pr oportion to their weights. 李贝. 西洋科学史.

编辑:韦德