- 平均直径
- average: n. 1.平均，平均数。 2.一般水平，平均标准。 3. ...
- diameter: n. 1.直径。 2.(显微镜等的)放大倍数。 短语和例 ...
- mean diameter average grain diameter: 土的物理性质平均粒径
- average cladding diameter: 平均包层直径
- average core diameter: 平均纤芯直径
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average diameter中文什么意思
- 平均直径
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例句与用法
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- This paper gives a survey on experimental forestland . 25 tree species were selected , and arranged in order by average diameter at breast height , average height , average individual volume and annual average volume increment in a unit area in this experiment
摘要简要介绍了试验林地的概况，选择了25个树种进行试验，并按各树种林分平均胸径、平均树高、平均单株材积和平均单位面积蓄积的年平均生长量进行排序。 - 3 . for encapsulated pcms with less than 10 m in their average diameter , their temperature and heat of phase transition seldom change as their average diameter decreasing ; however , their crystallization peaks vary dramatically and the super - cooling becomes worse
3 、对于平均粒径小于10 m的相变材料胶囊，胶囊的相变温度以及相变热基本不随粒径变化，而结晶峰变化较大，其过冷现象随着粒径的减小而加剧。 - ( 4 ) the droplets diameter of the combined spin - flow pressure spray drying are between 30um and 150um and the ranges of the droplets are narrow . the average diameter of the droplets is between 50 um and 100 um and the spraying angle can be adjusted from 30 to 180
( 4 )采用旋流式组合压力喷嘴雾化后的液滴直径大都分布在30 150um之间，雾滴分布范围较窄，其雾化的平均液滴直径在50 100um左右，压力喷嘴的雾化角度可在150 180范围内。 - In this thesis , the effects of the preparation methods of pt / c and pt - ru / c catalysts and the average diameter of the catalyst particles on the electrocatalytic performance of the catalysts for the ethanol oxidation are investigated using the electrochemical methods and xrd , tem , eds techniques
本论文用电化学方法及xrd 、 tem 、 eds等技术研究了pt c和pt - ru c催化剂的制备方法、催化剂的平均粒径等因素对催化剂对乙醇氧化的电催化活性的影响。 - The sols is bright yellow and stable during a month and a half . silver sols are charaterized by a transmission electron microscopy ( tem ) and ultraviolet - visible spectrophotometer ( uv ) . the result indicates that the silver particles are approximately spherical and monodispersed with an average diameter of ca . 15nm
溶胶呈亮黄色，贮存一个半月不发生凝聚，并用紫外分光光度计和透射电子显微镜对其研究，发现制得的纳米ag为球状粒子，粒径为15nm 。