您要查找的是不是：
- optimum usable frequency 最佳可用频率
- maximum usable frequency prediction 最高可用频率预测
- The market offer optimum condition for sale. 市场为销售提供了最佳条件。
- He told me which wells were usable along the road. 他告诉我沿线那些井是可用的。
- Most favorable or desirable; optimum. 最理想的最适宜的，最令人满意的，最优的
- New techniques make it possible to recover usable things from waste. 藉新技术即能从废弃物中回收可用之物。
- The act of obtaining usable substances from unusable sources. 废物利用从无用的东西中获取有用物质的行为
- He varied the transmission frequency. 他变换了无线电传送的频率。
- A unit of frequency equal to one cycle per second. 赫兹频率的单位，等于每秒一周
- lowest usable frequency 最低可用频率
- Fatal accidents have decreased in frequency over recent years. 近年来死亡事故发生的频率已经下降。
- I think your old canvas schoolbag is still usable. 我觉得你那个旧帆布书包还能用。
- Worn or used until no longer usable or effective. 磨损的，损坏的穿破的，用坏的以至完全无用的
- We can often correlate age with frequency of illness. 年龄的大小往往与发病率有关。
- Now your advice is very optimum. 现在你的建议是很适宜的。
- Accidents on that highway are happening with increasing frequency. 那条高速公路上车祸发生得越来越频繁。
- He tells me which wells are usable along the road. 他告诉我沿线那些井是可用的。
- A source of usable power,such as petroleum or coal. 能源可用能量的来源，如石油或煤
- He tell me which wells is usable along the road. 他告诉我沿线那些井是可用的。
- You have established the optimum price. 你已制定了最佳价格。
