逼近 1.(靠近, 接近) press on towards; gain on [upon]; approach; crowd on; close in on; draw near 逼近敌人主力 close in on the main force of the enemy; 敌人已在我军逼近时逃窜了。 the enemy ran away at our approach.2.[数学] (用较简单函数代替较复杂函数, 使其误差尽可能小) approximate; approximation; 逼近度 degree of approximation; 逼近函数 appoximating function; 逼近式 approximant; 逼近误差 approximate error
我们事先得到敌人正在逼近的警报 we received warning that the enemy were getting nearer
The obtained results in the paper are as follows : ( 1 ) the expansion of fourier series of orthogonal trigonometric polynomial for conditional mathematical expectation and function of random variable ; ( 2 ) the best approximation of trigonometric polynomial about another random variable for function of a random variable ; ( 3 ) the best approximation order of trigonometric polynomial for function of random variable 摘要获得了如下结果: ( 1 )条件数学期望及随机变量函数的三角多项式级数表达; ( 2 )一个随机变量关于另一个随机变量的三角多项式的最佳逼近; ( 3 )随机变量函数被随机变量三角多项式最佳逼近的阶。