The sensitivity of degradation of several macro properties was studied through the freezing thawing tests of concretes with different durability in water and salt solution.
分别以水中冻融和盐溶液中冻融循环作为试验条件，研究具有不同耐久性的混凝土在冻融过程中多种宏观性能劣化的敏感程度。
The fiber showed circular section, homogeneous structure without sheath and core, splendid mechanical properties and wide water solution temperature range.
纤维呈圆形截面，无皮芯层，结构均匀，具有良好的力学性能和宽的水溶温度范围。
According to the welding properties of P91 and C12A steels, the paper presents a welding solution to assemble C12A water pressure valve to P91 main steam pipe in field.
根据P 91和C12A钢的焊接性能，提出了现场中在P 91主汽管道上加装c 12 A水压闸阀的焊接工艺措施。
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