However, the creep fracture of medium strength match joint, located in the low strength base metal remote from the weld interface, showed a ductile fracture character.

中强匹配接头蠕变断裂位置在远离焊缝界面的低强度母材区，呈延性断裂性质。

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This is because of the difficulty in distinguishing possible health effects from the very low signals emitted by base stations from other higher strength RF signals in the environment.

这是因为很难对基台发射的很低信号与环境中其它较高强度的射频信号分别造成的可能健康影响进行区分。

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This phase emphasizes easy miles, but don't confuse base training with fitness running. You are building a base by increasing miles and adding some speed and strength work.

这个阶段强调轻松的耐力跑，但是记住不要把基础训练和健康跑混淆起来，你是通过增加你跑步的距离以及作一些速度和力量练习来打基础。

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Although BNP Paribas looks for strength in base metals next year, it lowered its fourth quarter 2012 and first quarter 2013 price outlooks for aluminum, copper, lead, nickel, tin and zinc from previous forecasts after price weakness earlier this year.

FORBES: FOCUS: Base Metals May Rise Going Into Year's End

It can be caused by a number of factors, including a rapid increase in the frequency of training, sudden increase in the intensity of training, transition from one training method to another, genetic abnormalities of the knee joint and poor base strength of the quadriceps.

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