聚丙烯纤维在各个方向上对抗着水泥收缩的应力，因此提高了防水砂浆凝固后的强度，同时具有提高耐火极限的作用。
The polyacrylic fiber resists the stresses of cement shrinking in different directions to raise the strength of solidified waterproof mortar and raise the fireproof limit.
聚丙烯纤维在各个方向上对抗着水泥收缩的应力，因此提高了防水砂浆凝固后的强度，同时具有提高耐火极限的作用。
The polyacrylic fiber resists the stresses of cement shrinking in different directions to raise the strength of solidified waterproof mortar and raise the fireproof limit.
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