在400系列中采用耐久弹簧和楔型块结构，适用于重载和有长寿命要求的场合。
The 400 series adopts durable spring and wedge block structure, suitable for overloading and long life requirements of the occasion.
传感元件本身被弹簧更大冲击/振动耐久性暂停。
The sensing element itself is suspended by springs for greater shock/vibration durability.
垫耐久性测试仪用途：本机适用于各种弹簧软床垫测试。
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