但专家认为，黑客很容易就可以骗过系统，比如按系统可接受的频率破译密码。
But experts say that the hackers simply learn to trick the system, by making guesses at an acceptable rate, for instance.
在同源性方面，在进化上比较接近的物种，基因的密码子使用频率和使用偏性指标比较接近或基本相同。
Moreover, species with near homology relationship on evolution share the near codon usage frequency and preference index or the similar index.
一种实例性的密码政策可以包括对密码的长度和密码所用字母的要求，更改密码的频率以及允许登录错误的次数。
An example password policy would include requirements for the length and characters used in the password, how frequently they must be changed, and the number of failed login attempts allowed.
RNA病毒的聚合酶基因总体上和宿主密码子使用类型不一致，限制了聚合酶基因的及早和过高表达，但其密码子使用频率对聚合酶的限制是适中的。
RNA polymerase in RNA virus is different from host cells restrict it's high and early expression. The restrict is moderate compared with other virus genes.
密码子的使用频率可以作为指导饲料氨基酸生物配比的参考依据。
The tricodon use rate can direct the biological formula of amino acids of low protein diet in chicken.
先导链与滞后链在第一、第二、第三密码子碱基使用频率基本一致且显著正相关。
The result show:1 there is same bases usage frequency in coding sequence between leading strand and lagging strand 2 There also same bases usage frequency in first codon, second codon and third codon.
设计合成编码蛋白质基因的要点为：（1）按照宿主系统中高表达蛋白质基因对密码子的使用频率选用氨基酸密码子，以期合成基因得到高效表达；
The strategy included, (1) condon usage in synthetic gene should be corresponded with the statisical codon usage in genes of highly abundant proteins in the host;
使用频率最高密码子为NNA，使用频率最低的密码子为nng。
The most frequently used codons were NNA and the most infrequently were NNG.
使用频率最高密码子为NNA，使用频率最低的密码子为nng。
The most frequently used codons were NNA and the most infrequently were NNG.
应用推荐