Astm standards
[化] 美国材料试验学会标准; ASTM标准
🧩 词语组成解析
[化] 美国材料试验学会
n. 标准；规格（standard的复数）
🗣️ 情景例句
Yes. Here's the survey report issued by the Health Office, which is absolutely reliable.
有。这是由卫生检疫所签发的检验报告，它是绝对可靠的。
Beg from beggers and you'll never be rich.
向乞丐乞讨，永远发不了财。
The undulating waves of the open sea are generated by three natural causes:
海浪是由三个自然因素形成的：