It established the direct relationship between stress and strain that is the basis for the formulas of linear acoustics.

他指出压缩和张力之间的关系是线性声学的基础。

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The strain of bacterium analyzed from the bones and teeth of a Hereford plague pit dug in 1349 is identical to that from a plague pit of 1348 in southern France, suggesting a direct route of travel.

在对从赫里福德1349年的瘟疫万人坑中采集的骨殖和牙齿，以及法国南部1348年的瘟疫墓地进行采集分析后，可以发现这一支瘟疫细菌的完整的传播路径。

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Based on strain mode shape (SMS), the direct index methods of damage location and degree detection are presented and founded.

提出并建立了损伤位置直接指标法、局域应变模态面积损伤程度直接指标法。

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Prof Kivimaki said the evidence of a direct effect of job strain on the heart was mixed.

BBC: Work stress 'raises heart risk'

Swine flu is caused by a virus similar to the regular flu virus that circulates in people every year, but is a strain that is typically found only in pigs or in people who have direct contact with pigs.

CNN: CDC: Swine flu seen in 2 California children

Swine flu is caused by a virus similar to the type of flu virus that, in various forms, infects people every year, but is a strain typically found only in pigs -- or in people who have direct contact with pigs.

CNN: Among the swine flu mysteries: Why only deaths in Mexico?