Test of cutting performance shows that its lifetime can be increased greatly.
切削性能试验表明，激光硬化的刀具寿命可以大大提高。
Without attention, this will affect its performance during its lifetime and affect its ability to perform as it should.
如果不注意维护的话，钢琴的生命期内钢琴的性能将会受到影响，削弱其本身应有的表现力。
Without attention, this will affect its performance during its lifetime and affect its ability to perform as it should.
如果不注意维护的话，钢琴的生命期内钢琴的性能将会受到影响，削弱其本身应有的表现力。
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