P fertilizer could not obviously improve the nutrition quality of wheat and AA content, but could decrease paste strength and flexibility .
施磷对小麦营养品质和籽粒中氨基酸含量无明显影响，但能增强面团延展性，降低面团强度和筋力；
The results show that a proper air-entraining agent to be added not only can increase strength of cement polystyrene board effectively, but also decrease its density.
结果表明：适量引气剂的加入不仅可有效提高水泥聚苯板强度，还可降低密度；
The crack not only weakened the soil structure of the slope, but also provided passage for water penetration, which further led to soil softening and strength decrease.
裂缝的存在不仅削弱了膨胀土边坡土体的结构，而且为水的入渗提供了通道，从而使土体软化，强度降低。
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