在高电压运行中，化纤天鹅绒的纤维尖端由于高温烧蚀而膨胀、弯曲，从而影响了其运行寿命；
The tips of the polymer velvet fibers are expanded and bent because of the erosion in operation, which shortens the lifetime of the polymer velvet cathode.
纤维对基体开裂起抑制作用并降低了裂纹尖端的应力集中。
Carbon fibers restrained the matrix cracks growth and diminished the crack tip stress intensity factor.
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