plain (l) 中文意思是什麼

plain (l) 解釋

plain : vi 〈古、詩、英方〉發牢騷，訴苦；嘆惜，悲傷；哀悼；悲歌，痛哭。adj 1 平的，平坦的。2 平易的；普通...
l : L-beam, L-iron 不等邊角鋼。L,￡＝〈拉丁語〉 libra （＝ pound）。

例句

Effects of potassium on yield of cotton gossypium hirsutum l. and optimal quantity of potassium in huanghuaihai plain, china

鉀肥對棉花產量的影響及最佳施用量研究
Based on typical sample, soil survey, environment survey and soil physical - chemical analysis, under the direction of chinese soil taxonomy, according to the principle of stability, discrepancy, dominant and integration of soil series taxonomy, applying to methods of statistic analysis and system integration, the selection of indexes of soil series taxonomy of hydragric anthrosols in chengdu plain soil series taxonomy soil series naming and index were systemically sturied. the results showed : ( l ) the main affectoi of hydragric anthrosols soil series in chengdu plain were : soil structure in 100cm soil depth ; fe2o3 ( dcb ) ; the texture of hydragric epipedon ( cultivation horizon ) ; the proportion of clay and salt in hydragric epipedon ( cultivation horizon )

本文以成都平原主要水耕人為土為例，在中國土壤系統分類思想的指導下，通過典型采樣、土壤詳查、環境調查和室內理化分析，遵循土系分化影響因子的穩定性、差異性、主導性及綜合性等原則，利用統計分析和系統綜合分析等方法，對水耕人為土的土系劃分指標選取、土系劃分、土系命名及檢索等作了較為系統的研究。
The main contents are as follows : l. this paper discusses the structure of cad system. according to the design process of the miter gate, this paper adopts parallel structure to combine the plain structure design, spacial fem calculations and working drawing in rzmcad system

主要研究內容如下： 1 、研究探討了cad的系統結構；根據人字門的設計過程特點，研究採用了集平面結構設計? ?空間有限元分析? ?施工圖繪制於一體的并行結構設計方法。