这上衣的衬里是用丝绸做的.The coat was lined with silk.请用丝绸为我做套晚礼服好 吗 ?Would you fashion an evening dress from silk for me, please?用丝绸 、 人造丝或棉布制成的带有绫纹的纤维.A slightly ribbed, woven fabric of silk, cotton, or rayon....
此比率自然对数称为对数的减量.The natural logarithm of this ratio is called the logarithmic decrement.尾数对数的小数部分. 如在对数2.95424中, 尾数是0.The decimal part of a logarithm. In the logarithm 2.95424, the mantissa is 0.95424.尾数对数的小数部分.如在对数2. 954...