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1·Leaf area index (LAI) is an essential parameter for monitoring crop growth dynamic.

叶面积指数(LAI)是估算作物生长的关键参数。

2·Testability is the essential parameter to evaluate and guarantee the functional quality of products.

可检测性是衡量并确保产品功能质量的重要特征参量。

3·Scores of sensory quality of a building is an essential parameter in the evaluation of a unit engineering quality.

观感质量的评定得分率，是组成单位工程质量“合格”、“优良”等级的内容之一。

4·On base of the essential parameter chosen reasonably, the dendritic morphology of incorporated noise model is simulated successfully.

在合理选择以上关键参数的基础上，成功模拟了耦合噪声时的枝晶形貌。

5·Fatigue strength of steel is an essential parameter in designing mechanical parts and analysing their reliability, but fatigue strength of steel is difficult 'to be got in manufacture.

钢材的疲劳极限是对机器零件进行抗疲劳设计及可靠性分析的必需数据，但许多钢材的疲劳极限数据往往很难查找。

6·Taking streaming current SO as the essential parameter, this paper focuses on the electrokinetic chemistry characteristics of oxidation and reduction process in water treatment condition.

以流动电流为参数，研究了水处理条件下氧化还原过程的电动化学特性。

7·On this ground, study on dynamic property and dynamic parameter of weathered granite subgrade soil in repeated loading is quite essential.

因此研究动态交通荷载作用下风化花岗岩路基土的动力变形特性和动力参数是十分必要的。

8·This work provides essential theoretical summary and preparations for further research on new media preparation, media parameter reconstruction and so on.

对新型电磁媒质的制备、电磁媒质参数反演等研究提供了必要的理论归纳和准备。

9·Cultural parameter, stylistic parameter and pragmatic parameter are essential units in the establishment of Utterance Grammar.

文化参量、文体参量及语用参量这些基本单位是建立“话语语法”体系不可缺少的要素。

10·Therefore, in order to assess, diagnose and improve the supply quality, the collecting link of real-time and high accuracy and dynamic electric power parameter is essential.

因此，为了评估、诊断与改善供电质量，实时高精度的动态电力参数的采集环节是必不可少的。