查询词典 prefix

Prefix entries are written to the index block only if the index block does not already contain a prefix entry whose value is equal to the present prefix entry.

应用键压缩后，生成索引时，如果一个键值的前缀在索引块中不存在，此前缀才会被写入索引块中。

Methods in the second group use the cyclic prefix inserted into the OFDM symbol, they do not affect the data rate, but the performance is not agreeable, because the cyclic prefix is contaminated by inter-symbol interference in the multipath channel.

第二大类方法利用了OFDM符号中插入的循环前缀，不影响数据的传输效率，但由于循环前缀受到严重的符号间干扰的影响，这类方法性能不佳。

a scheme of channel estimation using cyclic prefix based on the measurement of the low-voltage power line channel model is presented.after obtaining the frequency response of pilot sub-channel under the state of comb-type pilot,the data sub-channel response is obtained by interpolating the frequency response in frequency direction.in the pilot-free data period,the estimation of the channel is carried out by using cyclic prefix in order to improve the performance of system error rate.

摘 要：通过实际测量给出低压电力线的信道模型，在此基础之上提出了利用循环前缀对信道进行估计的方法，即在梳状导频模式时，使用导频获得导频子信道频率响应后，对其在频域方向进行插值得到数据子信道响应，在其后没有导频的序列的数据周期内，使用循环前缀对信道进行估计，从而起到改善系统误比特性能的目的。

You can't have one leftmost prefix OR another leftmost prefix for the same index.

同一个索引中，你不可能把OR的左边和右边都设为最多前缀。

Some feel that the prefix "dys-" should be used where there is reasonable suspicion of "organicity" to warrant the more medical terminology. The prefix "dis-" is used to denote mislearning and more psycho-emotional components.

一部分人为了确保医学术语的严谨性，认为：前缀"病态"应该被用在已经有充分的理由怀疑其生理机能上存在问题的情况下；而前缀"非"应该被用于表示"丧失"的意思，具有更多的心理情感上的成分。

Some feel that the prefix "dys-" should be used where there is reasonable suspicion of "organicity" to warrant the more medical terminology. The prefix "dis-" is used to denote mislearning and more psycho-emotional com ponents.

一部分人为了确保医学术语的严谨性，认为：首码"病态"应该被用在已经有充分的理由怀疑其生理机能上存在问题的情况下；而首码"非"应该被用於表示"丧失"的意思，具有更多的心理情感上的成分。

Note, though, that the $ prefix does double duty as a prefix on identifiers (see section 3.1), so a hex number prefixed with a $ sign must have a digit after the $ rather than a letter.

注意$作为标志符前缀有双重意义(参见3.1节)，因此，十六进制数值跟在前缀$后必须是一个数字而不能是一个字母。

Inherent inter-symbol and inter-carrier interference elimination ability of orthogonal frequency division multiplexing system attribute to its cyclic prefix. But the case of multipath fading channels whose the channel impulse response length exceeds the duration of cyclic prefix causes intersymbol interference and intercarrier interference, which may degrade system performance severely.

正交频分复用系统中的循环前缀具有一定的抗码间干扰和子载波间干扰的能力，但是当多径衰落信道的最大信道脉冲响应长度超过了循环前缀长度时，OFDM系统的性能将会严重下降。

At the same time, there was buying of steel shares, the data show that in the above-mentioned period,"T prefix" account the cumulative net bought Unit of the amount of up to 18,449,300 yuan.

同时，有购买的钢铁股，数据显示，在上述期间，的"T字头"帐户的累计净购买了高达1844.93万元数量单位。

Which yesterday rose 9.09% per cent stake in Alliance, which in October since the sale of motor ability tests, there have been accumulated in the "T prefix" account 24 times, bought a net total of 37,523,300 yuan.

而昨日上涨9.09％的百分之联盟在10月以来龙虎榜出售，其中有在的"T字头积累的"账户的股份24倍，买了3752.33万元净总额。

Georgiana,The Duchess of Devonshire: No,I made that many years ago.

公爵夫人：不，我在几年前已经做下这个决定了。

Be + caus e = Because .

& e &在结尾不发音。