是材料了应力消失了吗，是它吗，当他们知道这个特殊的管嘴时，这个特殊的管嘴，它是高度受压的吗，当他们装配的时候？
Was this stuff stress relieved? Was it, when they fabricated this particular nozzle, this particular piece, was it highly stressed when they assembled it?
用光学显微镜直接观察了合金在弯曲时应力诱发马氏体的增长和消失过程。
The growth and disappearance of induced martensite plates under bending stress have been also directly observed by the optical microscope.
如果受损的关节持续负重或承受应力，软骨变薄可进行下去，直到最后全层软骨消失。
If weight bearing or stress loading of the affected joint continues, thinning of the cartilage may progress to eventual full-thickness cartilage loss.
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