Logarithms were invented to shorten the work of extended numerical computation.人们发明对数来缩短运算冗长的数值计算工作.Yes, logarithms — that horror of high school algebra — were actually created to make our lives easier.没错, 对数虽然是高中代数的梦魇,它...
It weighs ten 1 bs . , i . e . about 4.5 kg.它重十磅, 即大约四点五公斤.Luggage in excess of 20 kg is taxed.行李超过20公斤要付费.Each passenger was allowed two 30-kg pieces of luggage.每位乘客可带两件30公斤的行李。...