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。
2
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。
3
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.