productive (l) 中文意思是什麼

productive (l) 解釋

  • productive : adj. 1. 生產的，生產性的；有生產力的；多產的。2. 產生[出產]…的 （of）。adv. -ly ,-ness n.
  • l : L-beam, L-iron 不等邊角鋼。L,￡＝ 〈拉丁語〉 libra （＝ pound）。
  1. Based on 2 - d - optimum orthogonal design field experiment in the jointing - heading period of phleum pratense l., the results show that potassium content is the most productive on the seed yield, phosphorus comes next and nitrogen the least

    摘要採用二因素d -飽和最優設計，通過貓尾草拔節抽穗期的根氮、磷、鉀和莖葉氮、磷、鉀的含量對其種子產量和產量因子進行灰關聯熵分析。
  2. L. those newly - bui1t foreign - funded productive enterprises shall enjoy exemption from urban infrastructure ; supporting fee, wall rebuilt fee, expenses for making city green, fee for bulk of cement and civil air defense building expenses

    1外商投資新辦的生產性企業，免收城市基礎設施配套費墻改費綠化費水泥散裝費人防建設費等所有建設規費。
  3. This paper chooses the indicators of economy and land quality input which has influence on the output, depending on cd - productive function to establish the function between input and output : y : productive forces of the cultivated land f : input of the fertilizer and agricultural chemical i : input of the irrigation l : input of the labor q : input of the land quality a : the level of average management t : the level of changing management a, b, c, d, f : productive elasticity coefficient the factor of the land quality includes texture, content of the organic matter, degree of the pickled, the structure of the soil

    本項研究選擇了影響農用地總產出的經濟投入指標和土地質量投入指標，藉助c - d生產函數，建立土地投入產出的函數關系： y = a ? e ~ （ ft ） ? f ~ a ? i ~ b ? l ~ c ? q ~ dy為以土地總產值表示的土地生產力f為化肥和農藥的投入i為灌溉投入，即灌溉所需用的水電費l為勞動力投入（考慮了農業機械投入的修正） q為土地質量投入a為平均管理水平t為變化的管理水平a 、 b 、 c 、 d 、 f分別為各相應生產要素的產出彈性系數其中，土地質量因子包括表土質地（ t人有機質含量矚入鹽漬化程度px土體構型p ）等。他們之間的關系為： q （ a ； xt a 。
  4. 3 the author analyzes the productive and opening potential and forecasts the demands of some kinds landuse and draws some conclusions : ( l ) the main cause for low production and income is the shortness of water and the poor fertility of land ; ( 2 ) constructive land is not suitable for farming and should be used for economy construction, and this is the main path to keep the total number of plantation in balance. 4. according to the land use, the author discover the unsustainable factors and use synthetical index method to evaluate the sustainability of landuse and the results are these : ( l ) synthetical and monomial value increase gradually with the change of time and sustainable degree of landuse rises year by year ; ( 2 ) the artical compartmentalizes the sustainable landuse into four grades : prophase, primary period, basic period and sustainable period according to the synthesical value with 30 %, 60 % and 85 %

    4根據酉陽縣土地資源利用現狀，在評價模型採用綜合指數法進行評價的基礎上，結合單指標多角度評價法，找出土地利用過程中存在的不可持續性因素，採用綜合指數法對酉陽縣土地資源進行可持續利用評價，結果顯示: （ l ）綜合評估值隨時間變化呈增加的趨勢，而且單項指標的評估值也逐漸提高，可持續利用度在逐年上升; （ 2 ）根據事物發展階段論，按綜合評估值為30 % 、 60 %及85 %將酉陽縣土地可持續利用劃分為可持續利用的前期階段、初期階段、基礎階段和持續階段等四個等級，從酉陽縣1980年、 1990年以及2000年總的土地可持續利用綜合評估值來看，酉陽縣到2000年土地利用管理仍處在可持續利用管理的初期階段，離土地可持續利用的目標還相差較遠。
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