Borosiliconizing

硼硅处理, 硼硅化, 渗硼硅化

🗣️ 情景例句

One apple. Two apples. Three apples. Four apples.
一个苹果。两个苹果。三个苹果。四个苹果。
What are you doing next week?
下周你干什么?
Most children have such a high ideal of their parents,
大多数孩子对父母估价过高,
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