aws

aws的英语例句

1. There s ~ n to be certain aws action between infection dur ~ ionand co - culture duration.

   感染时间和共培养时间之间似乎存在一定的交互作用.

2. AWS certification is industry's most respected stamp of approval.

   美国焊接学会的认证是工业行业中最受尊敬的可核准的印章.

3. In what year was the first bridge welding specification published by the AWS?

   AWS在哪一年出版了第一本桥梁焊接技术规范?