primary unit

Respectively when supercritical unit is in constant pressure operation and sliding pressure operation, the simulation test of primary frequency regulation is carried out at different load, and the test results are compared and analyzed.

分别对超临界机组定压运行、滑压运行时，在不同负荷下进行一次调频仿真试验，并将试验结果进行对比分析。

When the sampling consume index ( C 1/ C 2) of the primary unit and secondary unit for two-stage sampling equals 10, the optimum sampling number of secondary unit is 5 or 6 twigs at each density.

当二阶抽样的初级单元与次级单元的消耗指标C1／C2＝10时，在各种密度下次级单元的最适抽样量为每样株5～6个枝条；

The process of cooling system in ethylene unit was introduced, the primary fractionation system in the ethylene unit was simulated by using Pro/ ⅱ software, and the components of pyrolytic gas were obtained by the backing-out method.

介绍了乙烯装置急冷系统的工艺流程，运用PRO／Ⅱ软件对乙烯装置初分馏系统进行了模拟，其裂解气成分采用反推法获取。

The basin and range province is two primary tectonic unit in the of plate tectonics, and play important role in the lithospheric structure and its evolution.

盆岭体系是板块构造演化中的两个主要末端，在岩石圈结构构造及其演化中扮演中重要的角色。

Primary Frequency Control Strategy of Hydro Power Unit for Yunnan Power Network

云南电网水电机组参与一次调频改进方案

Meanwhile, this paper also utilizes the Swarm ways and introduces the primary realizing ways of tank unit combat simulation model based on the Multi-agent, according to Multi-agent merits of the Multi-agent.

并根据Multi-agent的特点，介绍了运用Swarm建模和开发工具对Multi&agent的坦克分队作战仿真的实现。

Central processing unit ( CPU ) is the primary functioning unit of any computer system.

中央处理器是任何计算机系统都有的基本功能部件.

Short-term forecasting of wind power is useful to primary and secondly reserve control and unit commitment for power system operation, and is useful to wind turbine control, unit commitment and scheduling, maintenance scheduling and trade strategy for wind farm.

风功率短期预测有助于电力系统一二次备用控制和机组组合计划的制订，并且有助于风电场风机控制、机组组合计划、交易策略以及部分风机检修计划的制订。

The primary unit is vegetation region, having 14 ones in China. The secondary unit is vegetation zone and the tertiary unit is vegetation area.

第一级单位为14个植被区域，第二级单位为植被地带，第三级单位为植被区。

Primary position of executer unit without external force adding to executer unit.

没有外力加在操动器上时,操动器的最初位置.

A file is the primary unit of storage on your computer.

文件是计算机数据存贮的基本单位.