Nucleon density Instrument can test its compactness rapidly.
核子密度仪可快速获得其压实度。
The compactness is an important index of controlling base quality.
压实度是控制基层质量的一个重要指标。
The invention provides a record device taking compactness and quality of a record into account.
本发明提供一种考虑紧凑性和记录质量的记录装置。
The invention provides a record device taking compactness and quality of a record into account.
本发明提供一种考虑紧凑性和记录质量的记录装置。
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