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  • <font color='#006600'>Granite case</font> Granite case

    2019-05-05

    日期:

    作者:phoenix???來源:www.bzsww.cn

    Hard rock refers to the uniaxial ultimate compressive strength of rock specimens under saturated humidity (sample diameter is 7-10 cm, height and diameter are the same) greater than 29.4×103 kPa (such as granite, diorite, basalt, etc. magma...

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