The technician emailed the client to confirm the backset required for the new shaft order.

技術人員寄電子郵件向客戶確認新軸件訂單所需的刀具偏移量。

During the meeting, the engineer explained why the backset must stay within half a millimeter.

會議中，工程師說明為何刀具偏移量必須控制在半公釐以內。

Before shipping the parts, quality control checked the backset on every machined sample.

零件出貨前，品管人員檢查了每個加工樣品的刀具偏移量。