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sampling spot中文什么意思
例句與用法
- Only the water at jiekou had been eutrophic . the result of biological assessment was that the average density of phytoplankton at all the sampling spots was more than 1 , 000 , 000 per litre , indicating that the lake was eutrophic going by the population density . but this density of phytoplankton was higher than that in similar lakes at the same pollution level
生物評價(jià)結(jié)果認(rèn)為，千島湖浮游藻類平均密度較同類營養(yǎng)水平的淡水水體高，其所有取樣點(diǎn)浮游藻類平均密度都10 ~ 6個(gè)? l ，國內(nèi)外一般認(rèn)為當(dāng)浮游植物平均密度10 ~ 6個(gè)? l時(shí)，其已經(jīng)達(dá)到富營養(yǎng)化水平，因此單從浮游植物密度來看，可以認(rèn)為千島湖已達(dá)到水體富營養(yǎng)化。 - Static mathematic model of drum accommodation and control is presented , and instruction model control strategy of sample intervals is presented based on differences between characteristic equations of lifting frame and characteristic equations of top and bottom board change among the sampling spots , the rules of this method are few , simple , easy to operate and meet controlling demands
給出了滾筒調(diào)控靜態(tài)數(shù)學(xué)模型，并根據(jù)調(diào)高機(jī)構(gòu)的調(diào)控特征方程與采樣點(diǎn)間頂?shù)装遄兓卣鞣匠痰牟町?，給出了在其采樣區(qū)間內(nèi)的指令式控制策略，其方法的規(guī)則條日少、簡單易運(yùn)算、符合實(shí)際控制要求。 - In order to validate the feasibility of the novel algorithm , ultrawide band pulse wave is used as incident wave . computational domains are limited by absorbing boundary condition . the transformation technique from near zone to far zone is used when the sampling spot is outside of the computational domains
時(shí)域成像技術(shù)以超寬帶脈沖源作為入射波源，用吸收邊界條件來界定計(jì)算域，而當(dāng)采樣點(diǎn)遠(yuǎn)離計(jì)算區(qū)域時(shí)，需要通過近?遠(yuǎn)場的轉(zhuǎn)換技術(shù)把近場等效面上的信息轉(zhuǎn)換到遠(yuǎn)場，本文采用簡單而實(shí)用的柱面波外推法作為近?遠(yuǎn)場的轉(zhuǎn)換方法，收到了較好的效果。 - The analyst of isotropy indicated that the sample spots of 12 soil nutrient contents ( except total nitrogen ) were correlated in given spatial range . the semi - variogram values increased when the distances were enlarged , and nugget lied in , which meant the existence of spatial variability structure , and sample spots were correlated in the 50 - meter of sampling distance
各向同性分析的結(jié)果表明： 12種(除全氮)土壤養(yǎng)分在一定的范圍內(nèi)觀測值之間存在著空間相關(guān)性，變異函數(shù)( h )隨間距增大而增大，且有基臺(tái)值，說明存在空間變異結(jié)構(gòu)特征，在50m的采樣間距內(nèi)存在空間相關(guān)性。