black vacuum
基本解释
- 粗真空
英汉例句
- Folks, the President needs a break. He’s like a Black and Decker cordless Dirt Devil vacuum.
伙计们，我们的总统需要休息一下，就像百德公司的吸污天使牌无绳吸尘器，你不给他充电就没法吸脏东西了。 - Folks, the President needs a break. He 's like a Black and Decker cordless Dirt Devil vacuum. If you don't recharge his batteries, he can't suck.
伙计门，总统需要一会休息。他现在就像个黑人和无线污垢的真空恶魔脱水机如果你不给他的电池再充电，他就不能吮吸了。 - Theory: utilize the difference of liquor level to form vacuum to completely wash the black liquor out of pulp layer, a three-phase adverse current washing method is adopted.
原理：利用液位差，形成真空度把浆层里的黑液过滤完进行洗涤，我们是采用三段逆流洗涤的方法。
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