Howard J. Feldman, the director of regulatory and scientific affairs at the American Petroleum Institute, noted that the evidence of a causal factor was inconclusive for some ailments.

美国石油研究所负责监管和科学事务的所长霍华德j·费尔德曼指出，证据表明废气对某些疾病的发生并不起决定性作用。

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The strength matching factor m has a great influence on the J integral in the vicinity of the crack tip.

焊接接头强度匹配因子m对裂纹尖端的J积分值有很大的影响。

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PAN L J, ZHANG B M, DAI F H. Loss factor of viscoelastic damping composite material under harmonic excitation [J]. Journal of Vibration and Shock, 2008, 27(2): 57-60.

[16] 潘利剑，张博明，戴福洪。 简谐激励下共固化复合材料黏弹阻尼结构的损耗因子研究[J]。振动与冲击，2008，27（2）： 57-60。

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Am sang "I Gotta Feeling" with octave-hopping pop singer Jessie J, X-Factor alumni JLS produced a medley of hits, while Barlow performed a duet with a painfully out of tune Cheryl Cole.

CNN: Review: Rock stars invade queen's front garden