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。
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。
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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