分级

In addition,the master of sci...

同时，还要掌握科学的学术期刊分级方法。

At first, by studying on the mineral constituents, texture and structure, Scleroscope hardness and Vickers hardness etc. of the stone, a fast classifying way of stone machinability was proposed. Based on the Scleroscope hardness, mineral constituents and texture of the stone, it was successful applied in classifying the main Chinese natural stone.

首先，通过对石材的矿物组成、组织结构、肖氏硬度和显微硬度等的分析和研究，提出了以岩石肖氏硬度为主辅以矿物成份和组织结构来快速定性确定岩石可锯性的方法，并成功地对我国主要石材进行了分级。

Based on the principle of multi-agent based secondary voltage control system the implementation scheme of this system is proposed.

1引言为了解决传统的全局电压控制存在的问题，提高电压控制水平，许多电力系统采取了分级控制的策略[1-4]。

It is the crucial procedure for hierarchical voltage control to solve the strategy for secondary voltage control.

二级电压控制策略的求解是电压分级控制的关键环节。

This study were made the identification and analysis of self-chosen inbred lines to resistance of maize rouh dwarf virus.

本文研究了玉米不同种质类群内和类群间选系对玉米粗缩病抗性鉴定与分析，并建立了对玉米粗缩病的分级指标体系。

This study were made the field investigation,identification and analysis of 5 commonly used maize inbred lines in china,self-chosen stability lines and new hybrid to maize red spider.

研究五大种质常用玉米自交系、自选稳定系及近两年山西省审定的玉米新品种对红蜘蛛抗性的田间调查、鉴定与分析，并建立了对红蜘蛛抗性的分级指标体系。

Aimed at the use of underwater active detection system, an analog pretreatment circuit is designed. More than one amplifier and two filters are used to process the signal. The signal can be amplified and self-excitation is avoided. The series of AD867X are used to restrain the circuit noise.

针对水下主动探测系统的应用，设计了一种模拟预处理机，该电路采用分级放大结构，并使用两级滤波器对信号进行滤波处理，在达到对信号放大倍数要求的同时避免了放大器自激，采用噪声性能好的AD867X系列芯片有效抑制了电路噪声对信号的影响。

The Entertainment Software Rating Board is a non-profit, self-regulatory body established in 1994 by the Entertainment Software Association.

娱乐分级委员会是一个非赢利性的独立机构，由ESA创始于1994年。

In a small fashion, the semibreve's division coule be divided into three minima(prolatio perfetus or major prolation) or two minima(prolatio imperfectus or minor prolation) and , at the higher level, the longs devision could be three or two breves(modus perfectus or perfect mode, or modus imperfectus or imperfect mode respectively).

类似的方式是全音符的分解（被称为prolation），全音符可以被分解成3个最小值（被称为prolatio perfectus 或者major prolation）或者2个最小值（被称为prolatio imperfectus or minor prolation），在一个更高的分级中，longa的分解，可以被分解成3个或者2个二全音符（被称为modus perfectus or perfect mode，或者modus imperfectus 或者imperfect mode respectively）。

In this text, the natural-ecological sensitiveness appraisal system of Forest Parks in mountain region was set up.

依据生态学和景观生态学的相关理论，筛选出对森林公园规划设计具有重要影响的各层评价指标因子，并确定了评价指标因子的分级标准。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。