特点：以锰为主要合金元素的铝合金,不可热处理强化,耐腐蚀性能好,焊接性能好。塑性好。(接近超铝合金)。
知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。
of voter dissatisfaction yardstick is an off-the-cuff substitute for criterion that implies amount extra frequently than quality.
standard apply/procedure The board is watchful to comply with standard procedures and work legislation.
[ before noun ] A standard reserve or author would be the one that is most commonly browse for info on a specific subject:
a : the fineness and lawfully preset weight from the metal used in coins b : the basis of worth within a monetary technique the gold standard
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a : some thing arrange by authority or by basic consent to be a rule for cleaning effectiveness stages measuring or like a product a standard
You should print or electronic mail a replica of your respective receipt towards your administration enterprise. You are accountable for cleaning procedure training payment and turning in receipt for your management company.
Essential Mod doesn’t corrupt your see here Minecraft worlds. We don’t adjust how the vanilla sport handles planet-saving.
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