Conclusion Maximum phonation time, the mean airflow rate and ratio of phonation volume to vital capacity can be used as indicator in clinical application.

结论最长发声时间可作为衡量嗓音功能的有效指标之一。发声气容量与肺活量比率及平均气流率做为衡量嗓音功能的临床指标均有意义。

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The efficiency and quality of inside thread influence directly production rate and ratio of precision. Therefore, it is very important that choosing appropriate process way.

内螺纹加工效率的高低和加工质量的好坏直接影响零件的生产效率和精度，因此选择合适的内螺纹加工方法就显得尤为重要。

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Figure 6 shows the video setting entries for video bit rate, frame rate, video size, and aspect ratio.

图6显示了视频比特率、帧速、视频大小和高宽比的视频设置项。

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Because I see low costs of capital for corporations persisting along with a low tax rate and below average ratio of employment costs, earnings seem secure even in a below normal GDP setting of 2 percent.

FORBES: When And Why The Market Makes New Highs

More developed economies, such as South Korea and Singapore, where both the rate of investment and the capital-to-labour ratio are relatively high, are probably not underinvesting.

ECONOMIST: Economics focus

Conversely, PBJ provides investors with a 134% portfolio turnover rate and a 0.63 expense ratio.

FORBES: Better Investment Results Often Come When You Don't Mess With What's Working