back-countersink

短语

词形变化

back-countersinks 复数 back-countersinks 三单 back-countersinking 现在分词 back-countersank 过去式 back-countersunk 过去式 back-countersunk 过去分词

释义与例句

n.
  1. 1.

    A countersink that is so made.

    There's no second operation on these parts. The backside features are all back-counterbores and back-countersinks.

v.
  1. 1.

    To countersink from the backside of a workpiece by using a tool that passes through a through hole, deploys a cutting edge (or receives it by manual insertion from an operator), countersinks the far side, retracts the cutting edge (or has it removed), and then retreats back through the hole (toward the tool's origin).

    工程

    We won't need any second operation on these parts. We're going to back-counterbore and back-countersink all of these features on the backside.

词源

From back- + countersink.

来源：wiktionary