defective workmanship

基本解释

It's fully guaranteed against defective materials and workmanship under normal use.
在正常使用情况下保证不出现材料或技术方面的缺陷。
This watch is warranted for one year from date of purchase against defective workmanship.
自购买之日起对装配技术上的问题提供一年保修。
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HUAHE guarantee to supply free replacement parts to any defective of HUAHE product which proved to be defective in material or workmanship when under proper operation during warranty period.
确认由于制造或材料不良等原因发生故障的任何零、部件都将免费提供更换件。

The warranty on the previous-generation LEAF's battery covered it against defective materials or workmanship for five years.
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