AGING: the process of running product through low temperature airdraw furnaces for the purpose of relieving stress which was caused in the hardening operation.
时效处理：指让产品通过低温通风炉以释放淬火造成的应力的工艺。
2
He ventured that plants draw part of their nourishment from the air.
他试探着提出了植物从空气中吸取它们的部分养分的观点。
《柯林斯英汉双解大词典》
3
The teacher asked him to draw an air alphabet with his fingers.