1) pollen density
父本花粉密度
2) density of pollencloudy
花粉云密度
3) Pollen concentration
花粉浓度
1.
Pollen concentration in the air was deeply influenced by the air temperature during the blooming and also by the precipitation to the end of peak florescence, but it is little influenced by the sunshine.
１９９４～１９９６年河北省迁安县蔡园乡大气中板栗花粉散布特征研究表明，不同年份板栗花期有早有晚，大气中的花粉浓度变化悬殊；大气中板栗花粉浓度受花期气温和盛花末期前降水影响较大，受日照影响较小；盛花期花粉浓度与板栗产量的相关系数为０。
2.
The results showed that buildings had some influences on the diurnal and spatial variation of pollen of Sabina Chinensis,and the variation rules were as follows: 1)In general,diurnal variation curve of pollen concentration in the residential area showed two peaks and one vale.
通过对散粉期间居民区建筑不同位置、不同高度的圆柏花粉浓度进行了全天昼夜监测。
3.
The clas-sification of the cypress pollen concentration was 0≤6 g/m3,Ⅰ≥7 g/m3,Ⅱ≥16 g/m3,and Ⅲ≥67 g/m3.
目的了解北京市气传柏树花粉的浓度,并对花粉浓度进行分级。
4) particle density
粉粒密度
5) density as pressed
压粉密度
6) powder density
粉体密度
1.
The simulation results show that the powder density,the logarithmic strain ratio(LSR ) and their distribution uniformity decrease with the increase of the friction coefficient.
模拟结果表明:随着摩擦系数的增大,超导芯的粉体密度和对数应变比(LSR)均降低,且分布均匀性减弱;随着压下率的增加,超导带材的横向应变和纵向应变均增大,超导芯内的粉体密度和LSR值随之增加;同时,大辊径轧制有利于提高超导芯内粉体材料的密实度,并使得LSR值逐渐减少,但前后张力对超导芯变形的影响较小。
补充资料：父本
植物繁殖过程中亲代的雄性植株。参看〖亲代〗。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条