It has been shown that the velocity of sand flow and airflow at the entry of core-box was quite different.

结果表明，射砂孔位置的气流和砂流速度有显著差别。

youdao

It has been shown that the velocity of sand flow and airflow at the entry of core-box was quite different.

结果表明，射砂孔位置的气流和砂流速度有显著差别。

youdao