scratch

• The strain gage based on mechanical principles is the scratch gage .
  以机械原理为基础的应变计是刻痕应变计。
• I think the dog wants in -- i can hear it scratching at the door .
  我看那条狗想进来我听见它抓门的声音。
• He just turned pale and sat down and began to scratch in the dirt .
  他顿时脸色苍白，一屁股坐下，双手乱扒泥土。
• We have been scratching our heads for a solution to the problem .
  我们一直苦苦思索，想找到解决这一问题的方法。
• It rattles the windowpane and sends the dog scratching to get under the bed .
  它把窗玻璃震得格格作响，把狗吓得往床底下钻。
• Then the scratches and spots on the field lens would be visible at the eye lens .
  此时场镜上的划痕和小点会在接目镜中看见。
• He scratched as if to tear his hair, and addressed me recklessly .
  他在头上乱抓，好象要把头发也扯下来了，不顾一切地冲着我说。
• To make an investigation , one should go into matters deeply , not just scratch the surface ...
  做调查工作不能蜻蜓掠水，要深入实际。
• A replica technique is used to record the scratch patterns before and after loading .
  可采用一种复制技术把在加载前后的划痕图案记录下来。
• He had no intention, at this stage, of scratching inadequately for some other kind of living .
  事到如今，他无意凑合找个别的勉强糊口的工作。