on scratch中文什么意思

准时, 正点

• scratch:    vt.,vi. 1.(用爪、针等)搔 ...
• a scratch of:    一点点
• no scratch:    抗刮系列

例句与用法

1. By burying i just managed to arrive at the office on scratch
   我匆匆忙忙，好不容易才准时赶到办公室。
2. The adhension force of kapton and protective film were characterized on scratching test equipment
   利用划痕试验分析不同工艺制备的防护膜与kapton膜的结合情况。