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- Shielding attenuation of Mumetal and other materials at several frequencies. 高导磁合金等几种材料在不同频率下的磁场衰减特性。
- Direct-sequence spread spectrum (DSSS) takes a signal and "spreads" it over several frequencies, essentially creating redundant signals. 直接顺序扩频(DSSS)取出信号,把它“散布”到几个频率上,实质上形成了冗余的信号。
- Figure 16 compares a 30-mil thickness of Mumetal with various materials at several frequencies. 从图中可以看出:与其它材料相比,频率低于1kHz时,高导磁合金的性能最优;
- Direct-sequence spread spectrum (DSSS) takes a signal and "spreads" it over several frequencies,essentially creating redundant signals. 直接顺序扩频(DSSS)取出信号,把它“散布”到几个频率上,实质上形成了冗余的信号。
- Though GSM phones are interoperable with one another, different countries use different parts of the frequency spectrum, so “world phones” typically must be capable of using several frequencies. 虽然GSM电话相互间能互操作,但不同的国家使用不同的频段,所以典型的“世界电话”必须能使用多个频率。
- Any of several frequency regions of relatively great intensity in a sound spectrum, which together determine the characteristic quality of a vowel sound. 共振峰声谱中有相应强度的几个共鸣带中的任何一个,他们共同决定着元音的音质
- The shoe manufacturer had several outlets. 那家制鞋厂商有几家代销店。
- The corresponding WPD entropy values increase sharply when discrete spectrum interference (DSI), frequency spectrum of which is centered by several frequency points, exists in some frequency region. 将信号的小波包变换看做通过等带宽的滤波器组,输出是对应频带上的分量,如某一频带上存在离散谱干扰,其小波包变换树节点的信息熵将会明显增大。
- He sweated out his composition in several hours. 他苦干了几个小时才写出了作文。
- The baker empty several bags of flour into a bin. 面包师把几袋面粉倒入贮藏箱里。
- This dictionary has several appendices. 这本词典有几项附录。
- Several students have been flunked out. 有几名学生因考试不及格而被迫退学。
- Several baskets of fruit were eaten at the party. 宴会上,大家吃掉了好几篮水果。
- He was very active and rode down several horses. 他劲头很大,一连骑了好几匹马。
- The ledge overhangs by several feet. 壁架凌空伸出几英尺。
- Several witnesses can attest to her good character. 好几位证人证实她品行端正。
- I subscribed to several magazines. 我订阅了几份杂志。
- He redeemed several coupons at the store. 他从商店里得到了几张优惠券。
- She put several cloves of garlic in the dish. 她在菜里放了几瓣大蒜。
- After the rain, landslide bur several house. 雨后,同体滑坡掩埋了好几幢房屋。