[电] lot-tolerance percent defective
zǒng liàng piān chā bǎi fēn quē xiàn ㄗㄨㄥˇ ㄌㄧㄤˋ ㄆㄧㄢ ㄔㄚ ㄅㄞˇ ㄈㄣ ㄑㄩㄝ ㄒㄧㄢˋ