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- Sample Sizes and Precision Control in the Multi stage Sampling 多阶段抽样的精度控制及样本量计算
- multi stage sampling 多级抽样法
- It can be considered a multi stage carburizing. 这一过程可以看成是一个多段渗碳过程。
- The construction of ash dam in Weishui Power Plant adopts the multi stage pulverized coal ash subdam technology. 微水电厂贮灰坝的施工采用了多级粉煤灰子坝技术。
- The mathematic model of one dimensional multi stage carburation is obtained and it can describe every physical phenomenon in carburation. 该文建立了多段法渗碳的一维数学模型,用此数学模型能够清晰地描述渗碳过程中每一时段的物理行为。
- The better technological process now is the step control of carbon potential during carburizing.It can be considered a multi stage carburation. 目前最佳渗碳工艺方法是在整个渗碳过程中对碳势进行台阶式控制,这一过程可以看成是一个多段渗碳过程。
- Raw dextran was separated and purified by multi stage ultrafiltration according to the different ranges of molecular weight. 通过采用分级超滤的方法以不同的分子质量范围对右旋糖酐粗品进行分离纯化,并分析右旋糖酐在不同分子质量范围内的分布。
- Some problems concerning the design theories and optimization of multi stage decompression and micropore jet composite (MDMJC) mufflers are systematically analyzed. 对多级降压小孔喷注复合型消声器设计理论与优化方法中存在的问题进行了分析，介绍了为改善这些问题所做的一些探索工作。
- Establish the simulated calculation approach for simple sequential heat exchanger system and optimization for the multi stage sequential heat exchanger system. 建立简单序贯换热器系统的模拟计算方法，并优化设计多级序贯换热器系统。
- Its products can be categorised in sturcture to single shaft and multi stage compressor, multi shaft and multi stage compressor, single stage compressor, fans, etc. 其产品按结构形式分为单轴多级式压缩机，多轴多极式压缩机，单级式压缩机，离心式风机等;
- The Houjiangqiao Pb Zn deposit features multi source, multi stage in mineralization, which is mainly related to Devonian strata and hydrothermal activity. 后江桥铅锌矿具有多源、多阶段成矿特点,成矿主要与泥盆纪地层及热液作用有关。
- The mathematical model of multi stage carburizing is a linear partial differential equation, and superposability is an important property of the linear partial differential equation. 多段法渗碳的数学模型是线性偏微分方程。线性偏微分方程的一个重要性质是可迭加性。
- UFLS and UVLS are treat as multi stage control actions, and the total cost of load shedding is taken as the objective function.Based on the proposed security margins of transient frequ... 给出了其减载量优化问题的数学描述,以减载代价最小为目标函数,把低频和低压减载控制作为多级控制序列。
- For heterogeneous, water injection sandstone reservoirs, separate injection at multi stages is one of the important methods of impr... 对储层非均质性严重的注水砂岩油藏,多级分注工艺是改善注水井吸水剖面,提高油藏注水开发效果的重要手段之一。
- multi stage film fall evaporator 多效降膜式蒸发器
- Multi stage variable-speed drive (MSVD) 多级液力变速传动装置（MSVD）
- There are many spotlights on the stage. 舞台上有很多聚光灯。
- Please dim out the stage for the final scene. 请在最后一场即将开演时使舞台灯光转暗。
- The singer was led off the stage by the maestro. 歌唱家由那位著名的指挥领着离开了舞台。
- Prevent problems at sampling and production stage. 在打样和生产阶段及时防止问题发生。
