[机] 测量水平仪

level instrument的用法和样例：

例句

Plot the altitude of the crossroads and other significant sites of the northern plateau with no other instrument but our stone mason's level.在除了石制水平仪之外，没有其他仪器的情况下，测量出十字路口以及北部高原重要地点的海拔高度。
A surveying instrument consisting of a spirit level and a sighting tube,used to measure the angle of inclination of a line from the observer to the target.由一个水平仪和一个观测管组成的测量工具，用来测量从观测者到目标的直线的倾斜角。

MUSICAL INSTRUMENTS

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Explorations

VOA慢速英语2013 An Unusual Instrument for Sale at the Smithsonian Craft Show

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学英语单词

boring machine standard

chinas

collision reaction rate

completely integrable