Self-increase operation and the self-reduction operation are the operations used in C language, they can only act on the variable, not act on the constant or the expression.
自增自减运算是C语言常用的运算，它只能作用于变量，不能作用于常量或表达式。
The method removes impurities by synthesis process and self-reduction process of the catalyst and realizes metallization of the active component and high dispersion.
本法通过催化剂的合成和自还原过程去除了杂质，实现了活性组分的金属化和高分散化。
The method removes impurities by synthesis process and self-reduction process of the catalyst and realizes metallization of the active component and high dispersion.
本法通过催化剂的合成和自还原过程去除了杂质，实现了活性组分的金属化和高分散化。
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