英语翻译Early in the century,a pump hadcome into use in which ex
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英语翻译
Early in the century,a pump had
come into use in which expanding steam raised a piston in a cylinder,and
atmospheric pressure brought it down again when the steam condensed inside the
cylinder to form a vacuum.
Early in the century,a pump had
come into use in which expanding steam raised a piston in a cylinder,and
atmospheric pressure brought it down again when the steam condensed inside the
cylinder to form a vacuum.
时间状语: Early in the century,
主语:a pump + 谓语:had come into use
从in which .句末: 定语从句修饰use
in which =in use 在使用中
定从中含有一个并列句:
分句1: expanding steam(主语)+ raised a piston in a cylinder,
分句2: and atmospheric pressure brought it down again
+时间状语从句: when the steam inside the cylinder to form a vacuum.
句意: 在本世纪初, 水泵已投入使用.在使用过程中,膨胀的水汽使汽缸里的活塞上升;
而当汽缸里的水汽变得稠密时,大气的压强又使活塞下降,从而形成真空.
主语:a pump + 谓语:had come into use
从in which .句末: 定语从句修饰use
in which =in use 在使用中
定从中含有一个并列句:
分句1: expanding steam(主语)+ raised a piston in a cylinder,
分句2: and atmospheric pressure brought it down again
+时间状语从句: when the steam inside the cylinder to form a vacuum.
句意: 在本世纪初, 水泵已投入使用.在使用过程中,膨胀的水汽使汽缸里的活塞上升;
而当汽缸里的水汽变得稠密时,大气的压强又使活塞下降,从而形成真空.
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