Influence of neighboring base composition on nucleotide substitution bias was observed in the sequence of nuclear pseudogenes and chloroplast non-coding and coding sequences.
In cryptography, a cipher produced by a compositionof a number of substitution and transposition ciphers.
密码学中，由替代密码和置换密码结合使用而构成的一种密码。
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Tourmaline is a kind of gem material with complex structure, composition and isomorphous substitution, which resuslt in diverse types and colors of this gem.