残留强度分别采用脲醛树脂、聚氨酯及SiC原砂作添加剂，以呋喃树脂砂进行改性。
... 残留气体管 gassy tube; 残留强度 retained strength; 残留生物岩 liptobiolite; ...
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残留强度因数 Residual factor
残留强度铸砂 retainedstrengthsand
残留剪力强度 Residual shear strength
老化后拉伸强度残留率 Percentage of retention of tensile strength after aging
快干硅溶胶与普通硅溶胶比较，具有制壳周期短、型壳常温强度高、残留强度低的优点。
Compared with conventional sol silicate, the rapidly dried sol silicate possesses the advantages of short shell-making period and high ambient strength as well as low residual strength.
结果表明：该复合溃散剂能大幅度降低水玻璃砂的残留强度，溃散性优良，成本低廉，具有一定的推广价值。
The results show that the compound disperser can remarkably reduce the residual strength and has good collapsibility and low cost. Therefore, it has the value for itself to be popularized.
使用较高模数的水玻璃混制的型砂具有残留强度低、吹CO2时间短等优点，并有好的抗吸湿性和表面稳定性。
The sodium silicate sand prepared with higher modulus sodium silicate has advantages of low residual strength, short CO2 blowing time, high moisture absorption ability and surface stability.
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