Salty herbs have the function of softening a mass and dispersing hardenings.
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Which discovery marks the start of modern antibiotics? The discovery of __________ marks the start of modern antibiotics.
织机织造过程主要由五大运动来构成,即 、引纬、 、送经、卷取,分别对应机织的五大机构。
某一圆轴的抗扭强度可由其抗扭截面系数和许用切应力的乘积度量。