median adj. 1.中央的,中間的。 2.【數(shù)學(xué)】中線的,中(位)數(shù)的,中值的。 3.【語言學(xué)】(舌)邊音的;舌邊中間開放的。 the median line 中線。 the median artery (vein) 中動(dòng)[靜]脈。 the median section 正中切面[切片]。 the median point 【數(shù)學(xué)】重心。 n. 【解剖學(xué)】中動(dòng)脈;中靜脈;正中神經(jīng);【數(shù)學(xué)】中線;中(位)數(shù),中值。 adv. -ly
diameter n. 1.直徑。 2.(顯微鏡等的)放大倍數(shù)。 a lens magnifying 2,000 diameters 能放大二千倍的透鏡。
2 . the curve of median diameter well showed the grain - size characteristics of the area , which is negatively correspond with the curve of the susceptibility . the median diameter can be regarded as the effectively alternating indication of the environments in the paper 2 、中值粒徑曲線很好地反映了本地區(qū)的粒度特征,并與磁化率曲線有很好的負(fù)向?qū)?yīng)關(guān)系,所以本文把中值粒徑作為環(huán)境的有效替代指標(biāo)。
Based on the topographic features and data of sediment particle size of bed load at the fluctuating backwater reach of liujiaxia reservoir , the streamwise variation and variation process of median diameter of bed load during silting and scouring periods of the fluctuating backwater reach are analyzed , and it can be seen that the turning point for the sediment diameter variation from coarse to fine is located at the outlet of shigou gorge of the fluctuating backwater reach 摘要根據(jù)劉家峽水庫變動(dòng)回水區(qū)的河段地形特征和歷年河床質(zhì)泥沙粒徑級(jí)配資料,分析了變動(dòng)回水區(qū)河段淤積和沖刷時(shí),河床質(zhì)泥沙中值粒徑的沿程變化和歷年河床質(zhì)泥沙中值粒徑變化過程,并指出粒徑分布由粗變細(xì)的轉(zhuǎn)折點(diǎn)在變動(dòng)回水區(qū)寺溝峽峽口處。