density是什么意思

网络释义

用法例句

Effects of compaction process on the density and properties of PZT ceramic;

压制方式对锆钛酸铅压电陶瓷密度及性能影响的研究

The density and shrinkage of PVC injection mouldings;

PVC注塑件的密度与收缩

Woven fabric density measure based on adaptive wavelets transform;

基于自适应小波变换的织物密度测量

Investigation on the Densities of Mosquitoes in the Underground of High Building in Cities,Fujian;

福建城市高楼地下层蚊虫密度调查

Researches on the Ralationships between Soil Moisture and Maize Planting Densities as well as Yields;

土壤水分与玉米种植密度及产量的相关性研究

Analysis of relationship between agestructures and population densities of mandarin voles;

棕色田鼠的种群年龄结构和密度关系分析

Effects of variety, sowing date and planting density on yield of kidney bean;

品种、播期及密度对菜豆产量的影响

Effect of different planting density and nitrogen fertilizer on yield and quality of hybrid Pennsetum 。;

密度和氮肥对杂交狼尾草产量和品质的影响

The quantitative relationship between planting density and soil water supply and water consumption is derived consequently.

本文通过对不同密度林地根层土壤水分补给和消耗量的分析,提出确定土壤水分植被承载力的概念模型。

Effects of plant density and the remained leaves number on contents of polyphenols and petroleum ether extracts in flue-cured tobacco leaves;

种植密度及留叶数对延边烤烟多酚及石油醚提取物含量的影响

Effect of irrigation and plant density on the development of transgenic insect-resistant cotton;

灌水量和密度对转基因抗虫棉生育特性的影响

Yield effect and optimized-measure combination of N fertilizer and plant density for different peanut variety types under single-seed planting;

不同品种类型花生精播肥料与密度的产量效应及优化配置研究

Brief report of early culture and its population in Stevia rebaudiana;

甜菊早栽及密度试验简报

Effects on Yield and Population Quality of Compact Planting Rice in Dry Cultivation Mulched with Plastics;

地膜旱管稻密度对产量及群体质量的影响

Single cell of INA bacteria can not act as ice nucleus, therefor the key to the study on the relationships between INA bacteria and frost injury to plants is to study the population of INA bacteria.

由于单个的冰核细菌细胞并不具有冰核活性 ,因此 ,研究植物上冰核细菌的种群数量或密度是研究冰核细菌与植物霜冻害关系的关键。