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。
2
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.