在VisualFoxPro中,substr是什么意思?

在VisualFoxPro中, 在VisualFoxPro中,substr是什么意思? 请解释一下substh h:%temp%这条命令中%temp%表达的意思 是subst h:%temp% 表达式LEN(SUBSTR(1234586,5,1))*Len(visualFoxPro)的结果是 VisualFoxPro计算邮费编程…某地至北京的邮路里程为1043km,通过邮政局向北京城区寄交“特快专递”邮件,应在24小时内到达,计费标准每克为0.05元,但超过100克后,超出数每克为0.02元.试编写程序计 VisualFoxpro如何编程序计算一个数各个位数的乘积? VisualFoxPro的选择题,不难,6道题左右,会的请 英语翻译The ability todegrade lignocellulose efficiently is thoughtto be associated with a mycelial growthhabit which allows the fungus to transportscarce nutrients,e.g.nitrogen and iron,over a distance into the nutrient-poorlignocellulosic subst 英语翻译When a reversible reaction has attained equilibrium at a given temperature,the product of the molar concentrations of the substances to the right of the arrow in the equation divided by the product of the molar concentrations of the subst 英语翻译we can see the different values of life that people have by this a few characters.They faced death unflinchingly and they all were great.They thought there was more important things than their own life and we believe that a full and subst 哪位达人能帮我看看这几句英语回答有没有什么错误吗?或者有没有什么更地道的回答能表达我的意思?1.Q：Describe your college life.Is it different from your high school life and why?A：My college is busy but subst 在英语中中“biack 在英语中,请问,在英语中, 中译英“在合作关系中” *在数学题中是什么 !在数学中是什么意思 在天气符号中, 在三角形ABC中,