The electronic gradienter which has won the practical new model patent was introduced.
介绍新型实用专利——电子水平仪。
Change of time and temperature will bring zero shift to electronic gradienter nowadays.
由于现有的电子水平仪随时间、温度的变化会产生零点漂移，测量前需进行手动调零。
Change of time and temperature will bring zero shift to electronic gradienter nowadays.
由于现有的电子水平仪随时间、温度的变化会产生零点漂移，测量前需进行手动调零。
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