初始部分 meaning in English

initial portion

Test method for determining initial fractional filtration efficiency of a vacuum cleaner system
测定真空吸尘器系统初始部分过滤效率的试验方法
Standard test method for determining initial , fractional , filtration efficiency of a vacuum cleaner system
测定真空吸尘器系统初始部分过滤效率的标准试验方法
This chapter is the base of this paper . in the third chapter , we discuss the boundedness in terms of two measures of the perturbed differential system ( l ) . first , we give a new concept on boundedness - ( h0 , h0 ) - bounded and establish some criteria to decide that the perturbed differential system ( 1 ) is ( h0 , h ) - bounded under the condition that the unperturbed system is ( h0 , h0 ) - bounded
本章初始部分给出了一种新的有界性定义? ( h _ 0 ， h _ 0 ) -有界，并在比较定理的基础上给出了在已知无摄动作用的脉冲微分系统具有某种( h _ 0 ， h _ 0 ) -有界性质的条件下，判断脉冲摄动微分系统( 1 )是否具有相应的( h _ 0 ， h _ 0 ) -有界性质的若干准则