将你在奢侈品上的花费降至可控范围。Keep your spending on luxuries down to manageable proportions.他震惊地发现花费至少超了10亿美元。He was stunned to discover cost overruns of at least $1 billion.该部门的花费少于其预算。There has been an underspend in the department&...
The authors show that the hyperboloid of one sheet and the hyperbolic paraboloid are ruled surfaces.作者证实:单叶双曲面和双曲抛物面是直线曲面.The mathematical model of the hyperboloid twist drill was introduced.介绍了以旋转单叶双曲面作麻花钻钻尖后刀面的数学模型.The...