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降低铝卷高温回火脆性的措施有：(1)在高温回火后用油冷或水快速冷却以抑制杂质元素在晶界偏聚；(2)采用含钼铝卷种，当钢中钼含量增加到0．7%时，则高温回火脆化倾向大大降低，超过此限仿古铝瓦中形成富钼的特殊碳化物，基体中钼含量降低，铝卷的脆化倾向反而增加；(3)降低仿古铝瓦中杂质元素的含量；(4)长期在高温回火脆化区工作的部件，单加钼也难以防止脆化，只有降低仿古铝瓦中杂质元素含量，提高铝卷的纯净度，并辅之以铝和稀土元素的复合合金化，才能有效地防止高温回火脆性。

可以从内容特点出发，提升用户吸收内容后的收获感。

必须看好定金合同！2、避免抢房陷阱开发商总会制造一些抢房的氛围。

多泵并联恒压供水，在设计上可做到在恒压条件下各工频泵的效率不变，并使之处于高效率区工作，变频泵的流量是变化的，其工作效率随流量而改变。

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水利用率高达80%以上。

然而，对于中介公司的服务，是不是和收费的价格挂钩呢？可是，经过王先生的接触，发现这确实和中介费的高低无关，无非就是带着看房，买方看妥了之后，对方提供购房协议，然后帮着办理贷款等。

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Ifyouoftenreportthattheactivesteeringfailswhenyoustartacoldcar,andthesteeringwheelisheavy,butafteraperiodofdriving,everythingisnormal,

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