纺织T/C 65/35 23x23 72x56 63是什么意思
1个回答
成份65%T 35%C
纱支23S*23S
密度72*56
的TC布
相关问题
23=10 72=63 65=66 84=96 97=
(1+0.23+0.34)x(0.23+0.34+0.65)-(1+0.23+0.34+0.65)x(0.23+0.
72°23'42”=()°,35'42”=()°
(1+0.23+0.34)x(0.23+0.34+0.65)-(1+0.23+0.34+0.65)x(0.23+0.34
设f(x)=x33,g(x)=t23x−23t(t∈R)
解方程组:23x+17y=63
设f(x)=x33,对任意实数t,记gt(x)=t23x−23t.
3(x-12)+23=35.7
解方程:23.4=2x=56
用加减消元法求23x+17y=63,17x+23y=57,求xy=?