非主要的

The last three joints of PБ-211 robot are controlled by symmetric valve controlling asymmetric cylinder system.

由于对称阀控制非对称缸两个运动方向上系统的开环增益及某些参数的不同，使得两个方向上的动态特性不对称，主要表现在超调量、调节时间、振荡次数和稳态误差等几个方面，这种本质上的非线性和非对称性给系统控制带来困难。

In this paper, we give a new class of adaptive nonmonotone spectral projected gradient technique for convex constrained optimization.

该文给出了求解凸约束优化的一类新的自适应非单调谱投影梯度法，主要思想是通过引入具有自适应性的权重参数，使算法在迭代过程中能自动调节非单调策略。

The main source of dustfall in heating period was Coal smoke dust and soil dust was the main source of non-heating period.

燃煤尘是采暖期降尘的主要来源，非采暖期降尘的主要来源为土壤风沙尘。

The relationship between the formation of some typical mineral (the authigenic pyrite and the ferruginous carbonate ) and hydrocarbon is discussed in this paper, based on the correlation of stratigraphic features and diagenetic mineral in different structural belt in the Member 3 of Shahejie Formation from Dongying Depression.

针对自生黄铁矿-碳酸盐矿物-自生石英矿物组合，提出了示烃球的新认识并将其分为两大类，I型示烃球主要分布于含油性较好层段，II型示烃球主要分布于烃类活动相对较弱的非含油层段。

Finally, to explain the advantage and shortcoming of nonparametric analysis and parametric analysis, and introduce some main shapes of nonpametric regression model: Fourier series, kernel estimators, and spline smoothing. In the meantime, we give the approximate theory and approximate distribution theory of these methods.

阐述了非参数回归分析和参数回归分析的优缺点，介绍了非参数回归模型的几种主要形式：富氏级数，核估计量和样条平滑，给出了这些方法的逼近理论和逼近分布情况。

The results showed that forest musk deer mainly fed on defoliations of evergreen or half-evergreen arbors and shrubs in winter, among which 16 species belonging to 14 families had been identified. In spring, the first-year branches and forbs were dominant, among which 18 species belonging to 17 families had been identified.

结果表明：林麝冬季主要取食常绿或半常绿灌木和乔木的落叶，经检验确认的有14科16种；春季主要以当年生枝条以及非禾草类草本植物为食，共确认17科18种。

The function of the inflectional morpheme ing lies in atemporalization of the verb,while one of the major properties of the gerund is to impose an imperfective construal on perfective situations.

ing的主要功能是消除动词时间性，而动名词的主要特征是使非持续性情状获得持续性识解。

The noise of Trial pilots was mainly intermediate or high frequency, and that of Riveters was high frequency.

试飞车间的噪声为稳态噪声，主要是以中高频为主，铆工车间的噪声为非稳态噪声，主要是以高频为主。

Thearticle gives the method of confirming the insufficient irrigational rule of three mainkinds farm crop which are wheat, corn, cotton of big farmlands, furthermore comparingthe effect of saving water to increase production under different rule of insufficientirrigation.

文章给出了小麦、玉米、棉花等三种主要大田作物的非充分灌溉制度的制定方法，并对不同的非充分灌溉制度的节水增产效果进行了比较。

The reference crop evapotranspiration(ET0) in Guanzhong region was calculated with the Penman-Monteith equation. The change characteristics of meteorological factors and ET0 over year were analyzed. The regressing relation between ET0 and geography factors was established. Space distribution of ET0 based digital elevation model was obtained. The water consumption model of main cropes was established using the crop cofficient method. The irrigation water requirement of main crop and it's space distribution based DEM under the different precipitation probability was obtained, which advanced the calculation precision of ET0 from spot scal to regional scal. The concept of water consumption under the irrigational scal was proposed. The water consumption model of different water user and model of groundwater balance based on the water consumption of Baojixia irrigation district was established. Which can refects the relation between water utilization, water consumption and change amount of groundwater resouces.

深入分析了关中地区气象要素的变化趋势，用Penman-Montainth 公式计算了参考作物蒸发蒸腾量（ET0），建立了ET0与地理要素的多元回归关系，获得了基于数字高程模型DEM的关中地区ET0的空间分布图；用作物系数法建立了关中主要作物生育期耗水模型，获得了主要作物在不同降雨条件下的灌溉需水，以及基于DEM的主要作物灌溉需水空间分布图，提高了作物蒸发蒸腾量由点到面尺度转换过程中的估算精度；界定了灌区尺度的耗水量的概念，包括用水耗水和非用水耗水，建立了灌区耗水量计算模型及基于耗水量变化的浅层地下水均衡模型，能较好地反映灌区引水量、耗水量及地下水蓄变量之间的内在关系。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐