研究了在不同增塑剂用量的情况下，试验样品的密度、动态缓冲曲线和静态缓冲曲线。

In case of different addition of plasticizer, the the density, the dynamic buffer curve and the static buffer curve were studied.

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如果您选择的是静态缓冲区选项，那么在下一次调用ERR_error_string时，该缓冲区会被覆盖。

If you choose the static buffer option, that buffer will be overwritten with the next call to ERR_error_string.

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如果参数为NULL，则openssl会将字符串写入到一个长度为256字节的静态缓冲区中，并返回指向该缓冲区的指针。

If this parameter is NULL, OpenSSL writes the string to a static buffer that is 256 bytes in length, and returns a pointer to that buffer.

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