求翻译：铬革屑的加入，水泥石的力学性能均有提高，起到了增韧作用，同时不影响水泥浆的其它性能，掺量为水泥质量的0.3%时，综合性能最佳。是什么意思？

Chrome shavings join the mechanical properties of cement paste have played a toughening effect, without affecting the other properties of the slurry, the content is 0.3% of the cement quality, best performance.

Chrome leather scraps, the cement of the rock mechanics performance has improved, the toughened, and do not affect water mud mixed with the other performance, for 0.3 % of the cement quality, comprehensive best.

Chromium leather meal joined, the limestone mechanics performance has the enhancement, played the plasticizing role, simultaneously did not affect the cement mortar other performance, when mixed the quantity for cement quality 0.3%, the overall performance was best.

Joining of chrome shavings, there was an increase of mechanical properties of cement, toughening played, at the same time do not affect other properties of cement, admixture for cement quality 0.3%, integrated the best performance.

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