The cause of DDD is typically the normal wear and tear that occurs in the discs as a person ages.
DDD的原因往往是随着人们年龄增长而出现的正常的磨损和撕裂。
The Supplier shall not be obligated to compensate either for normal wear and tear caused by wrong operation or for the losses due to direct or indirect accidents.
对于因操作不当造成的正常磨损，或因直接或间接事故造成的损失，供方不必赔偿。
Service shall include the labor and parts required to repair product which has become defective through normal wear and usage. this does not include consumable and their installation.
维修包括维修正常磨损及使用损坏的产品所需要的劳务以及配件，但不包括消耗品及它们的安装。
Service shall include the labor and parts required to repair product which has become defective through normal wear and usage. this does not include consumable and their installation.
维修包括维修正常磨损及使用损坏的产品所需要的劳务以及配件，但不包括消耗品及它们的安装。
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