The design filter can be replaced, together with the box without replacement, to reduce costs and save resources.
滤网可更换式设计，不需连同 箱体更换，降低成本，节省资源。
Furthermore, in the latter the peasants are outnumbered by the captured soldiers; without replacement from this source, there would be a serious manpower problem.
后二项中又以敌军俘虏为多，设无此项补充，则兵员大成问题。
Thus, the target is basically reached that the locomotive can run without replacement of the oil damper between two unwheeling repairs (at least 200 thousand kilometers running).
它们的特点是结构简单、阻力系数稳定、密封可靠，基本实现了机车走行一个架修期(至少20万公里)不换修油压减振器的目标。
Under simple random sampling scheme without replacement and unknown proportion of population possessing neutral attribute, the optimal allocation of sizes of two sub-samples is given.
对简单随机不放回抽样，在总体非敏感属性个体比例未知的情况下，给出了两个子样本容量的最优配置。
Aiming at defects which are exiting in image encryption algorithm based on chaotic sequences, this paper proposes an image chaotic encryption algorithm based on sampling without replacement.
针对现有基于混沌序列的图像加密算法的缺陷，提出一种基于不放回抽样的图像混沌加密算法。
This paper introduced several methods about the concrete strength inspection: the sampling method given by the present specification; simple random sampling without replacement; stratified sampling.
具体介绍了砼强度检测抽样的几种方法：现行规程抽样法；简单随机抽样法；分层抽样法。
This paper introduced several methods about the concrete strength inspection: the sampling method given by the present specification; simple random sampling without replacement; stratified sampling.
具体介绍了砼强度检测抽样的几种方法：现行规程抽样法；简单随机抽样法；分层抽样法。
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