用特定的加载块反复对床垫进行冲击，评估其耐用性，和弹簧的坚牢保持度。

Test objectives: use specific block impact on the mattress over and over again, to assess their impact, and the durability of solid retentivity.

youdao

用特定的加载块反复对床垫进行冲击，评估其耐用性，和弹簧的坚牢保持度。

Test objectives: use specific block impact on the mattress over and over again, to assess their impact, and the durability of solid retentivity.

youdao