一种磁带录音机带速反映磁带，用于检验录音机带速偏差，其特征在于它使用国家标准规定的空白录音带在其录音带的声轨上录制上每秒发出一次短促声响。
The magnetic tape with speech prompt for testing tape speed deviation of audio recorder can play its role only by inserting it into audio recorder. It is used to repair and calibrate audio recorder.
碑刻文献作为一种出土文献，真实地反映了当时社会的历史、文化及用字情况等，其研究源速流长。
As a kind of unearthed document, inscription documents reflect social history, words and the use of words at that time authentically, and the research of inscription documents has taken a long time.
速动比率反映了速动资产与流动负债之间的关系，它能告诉分析者公司的即期偿债能力。
The quick ratio reflects the relationship of quick assets to current liabilities it can tell analysts the ability of immediate debt paying.
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