x

• A number x is called an almost upper bound of a .
  数X称为A的殆上界。
• Electrons survive at least 1 x 1021 years.
  电子至少能存在1X1021年。
• X is killed by some non-zero element of a .
  X被A中某个非零元零化。
• These lines are bisected by x- and t-axes .
  这些直线被x轴和t轴所等分。
• Product y is more trouble-free than x .
  产品Y比产品X的问题要少。
• The product is the inner product of x and y .
  这个乘积是向量x与y的内积。
• Adjoin two new vertices x and y to n .
  在N中添加两个新顶点X和Y。
• This series will converge when|x|<1.
  当x1时这个级数收敛。
• Let the force in one of the bars be x .
  设其中一根杆的内力为X。
• If flag is on, branch to instruction x .
  若标志处于接通状态，则转移到指令X。