Traditional vibration feeders are mainly driven by electromagnet, which has the deficiency such as large volume, heavy mass, complex structure and loud noise.

电磁振动送料器在工业自动化生产线上已得到了广泛的应用，但其存在噪音大、结构复杂等缺点。

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Mass research results demonstrate that Genetic CETP deficiency is relative to atherosclerosis.

大量研究资料表明，CETP基因缺陷与动脉粥样硬化有关。

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But our deficiency in this knowledge will not vitiate the truth of the deductions I shall draw, which rest on the firm basis that the same laws of mass and force govern throughout nature.

但是，我们对这种知识的缺乏无损于我提出的这个真理，相同的质能法则支配着整个自然界。

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