ZXB2(3B)中的3B表示()。
If a/b = 6/7 and a/c = 2/5, what is the value of 3b + c in terms of a?
If 5a=9b=15c, what is the value of a+b+c?
(1) 3c-a=5c-3b
(2) 6cb=10a
If 5a+3b = 35 and a/b = 2/5, what is the value of a?
广告的“3B”创意原则不包括()。
MTP-3B链路建立失败原因是什么?
If 5a+3b = 35 and a/b = 2/5, what is the value of a?
If a/b = 6/7 and a/c = 2/5, what is the value of 3b + c in terms of a?
下图典型零件,按3B指令格式编写该零件的线切割加工程序。
设a、b为非零向量,且满足(a+3b)⊥(7a-5b),(a-4b)⊥(7a-2b),则a与b的夹角θ=( )。