distributional derivative是什么意思

网络释义

用法例句

The MLEs and distributions of unknown parameters in a multivariate t -model with uniform structure;

具有均匀结构的多元t-模型中未知参数的MLEs及分布

The affects of coal rank and temperature on the yield of pyrolysis gaseous products and sulfur distributions were studied.

利用固定床热解装置对3种不同煤种进行了热解研究,考察了温度和煤的性质对热解气态产物以及硫元素逸出规律的影响,结果表明:除了煤的性质外,温度是影响热解产物分布的重要影响因素;同时CO和CO2的逸出量与煤中氧元素的含量有关,而生成CH4和气态烃的量与H/O原子比有很大关系;热解过程中含硫物质以H2S和少量COS的方式逸出到气相,而逸出的气态硫也与煤的含硫量有直接关系。

The occurrences,distributions and harmfulness of Eichhornia crassipes in river channels,canals and ponds of Dongting area were investigated preliminarily.

对洞庭湖区(常德市、益阳市、岳阳市)河道、池塘、沟渠三大生境中的水葫芦Eichhornia crassipes的发生、分布及危害情况进行了初步调查,发现整个洞庭湖区,无论是河道(主要是小河和河滩)、沟渠还是池塘,都有水葫芦的危害,水葫芦在这些水体中常常形成单一优势种群,尤其在闲置池塘和沟渠中的危害程度非常严重,在洞庭湖区,对益阳市危害最严重,其次是常德市,岳阳市相对危害最轻。

Distribution of Ni-PTFE Composite Coating Prepared by Brush Electroplating with Straight-line Reciprocating Movement;

直线往复运动平面电刷镀Ni-PTFE复合镀层分布

The general distributions of trace elements in Chinese coals;

中国煤中微量元素分布基本特征

A review on distribution and risks of pollution from polycyclic aromatic hydrocarbons(PAHs) in China;

我国环境介质中多环芳烃的分布及其生态风险

Cooling water is not distributed well in each heat transfer tubes which makes the operation efficiency of vertical water coolers low.

冷冻水冷器各传热管冷却水量分布不均匀使其冷却效率普遍很低。

The endogenous hormone is unbalanced distribute to different organ of the tea tree in the autumn , Its motion range IAA is biggest,the ABA is narrower slightly , the ZR is minimum .

秋季茶树内源激素在不同器官中分布是不均衡的,波动幅度IAA最大,ABA稍次之,ZR最小。

The other is a new kind of distributed flexible drive system based on the function.

介绍了两种集装箱起重机控制系统 :传统的采用PLC集中控制方式的系统及新型的基于功能的分布式柔性驱动系统。