For getting good precision it is recommended to recheck level again.
为得到良好精度，建议再次检查水平度。
Lower the viscometer until the grooves on the spindle shaft just touches the coating, and recheck the level.
降低粘度计直至凹槽在定子的轴正好接触到涂料上，并重新检查其水平。
Lower the viscometer until the grooves on the spindle shaft just touches the coating, and recheck the level.
降低粘度计直至凹槽在定子的轴正好接触到涂料上，并重新检查其水平。
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