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Laser transformation hardening was carried out on U74 rail steel by a self-developed high power diode laser.
使用自制的大功率半导体激光器对U 74轨钢进行了相变硬化。
youdao
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Laser transformation hardening was carried out on U74 rail steel by a self-developed high power diode laser.
使用自制的大功率半导体激光器对U 74轨钢进行了相变硬化。
youdao