在高温下钛与（ABE ）反应速度较快，使焊接接头塑性下降，特别是韧性大大减低，引起脆化。

材料题

him not to go to school any more and help on the farm, Sarah took Abe s part against his father．Abe would rather read than eat, and when his father told him to stop, Sarah said, Let the boy read． In 1530 the day came when Abe would leave home to work in New Salem．For the last time she had taken Abes part against his father．For the last time she had kept the cabin quiet so that Abe could read． More than twenty years later,when Abe,whohad then become famous,was going to make a speech in a nearby

答案解析

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在高温下钛与（ABE ）反应速度较快，使焊接接头塑性下降，特别是韧性大大减低，引起脆化。

答案解析

材料题

him not to go to school any more and help on the farm, Sarah took Abe s part against his father．Abe would rather read than eat, and when his father told him to stop, Sarah said, Let the boy read． In 1530 the day came when Abe would leave home to work in New Salem．For the last time she had taken Abes part against his father．For the last time she had kept the cabin quiet so that Abe could read． More than twenty years later,when Abe,whohad then become famous,was going to make a speech in a nearby

答案解析

材料题

him not to go to school any more and help on the farm, Sarah took Abe s part against his father．Abe would rather read than eat, and when his father told him to stop, Sarah said, Let the boy read． In 1530 the day came when Abe would leave home to work in New Salem．For the last time she had taken Abes part against his father．For the last time she had kept the cabin quiet so that Abe could read． More than twenty years later,when Abe,whohad then become famous,was going to make a speech in a nearby

答案解析