气体压力的试验时，试验温度必须高于金属材料的脆性转变温度。
During the air pressure test, the test temperature shall be higher than the brittle transition temperature of the metal material.
如果是合金钢管道系统，液体温度应高于金属材料的脆性转变温度。
For alloy steel piping system, the liquid temperature shall be higher than the brittle transition temperature of the metal material.
蠕铁的韧性——脆性转变温度铸态和退火态均随磷含量的增加而升高。
The ductile-embrittlement transition temperature of vermicular graphite cast iron increased with increasing phosphorus content both in the as-cast and annealed condition.
试验表明，铸态铁素体球铁硅含量增加时，脆性转变温度也相应提高。
Test shows that the embrittlement temperature will increase with increase of the Si content.
结构钢材的韧性随温度降低而下降，其破坏形态也由塑性屈服向脆性断裂转变，构件的承载力也由强度控制变为材料的韧性控制。
The toughness of steel decreases as temperature drops, its breakage transfers from plasticity to brittleness and the loading capacity is controlled by the toughness, not the strength.
阐述了冷冻粉碎技术的原理，研究了低温脆性与玻璃化转变及转变温度的关系；
The principle and process of freeze grinding were analyzed. The relationship between the brittleness and glass transition was discussed.
阐述了冷冻粉碎技术的原理，研究了低温脆性与玻璃化转变及转变温度的关系；
The principle and process of freeze grinding were analyzed. The relationship between the brittleness and glass transition was discussed.
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