词汇	瓦丝
释义	瓦丝 wǎ sī古樂器中的土和絲兩類。
随便看	ratio of observed to expected ratio of of depreciation ratio of oil to water ratio of opening to total surface ratio of operating expenses ratio of operating expenses to sales ratio of operating profit ratio of operating profit to sales ratio of operational tons to port's throughput ratio of organs ratio of outflow ratio of output to input ratio ofoverfire air ratio of overload ratio of owned capital to borrowed capital ratio of oxygen consumption ratio of oxygen utilization ratio of parameters ratio of partial derivatives ratio of payables ratio of peak area ratio of peak values ratio of peak white-to-black level ratio of penetrable light ratio of penetration