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- Age structure may also be represented by a survivorship curve. 存活曲線(xiàn)也可以反映年齡結構。
- The diameter at breast height(DBH) of each tree was recorded.We determined the life table, age structure and survivorship curve of the Abies fargesii to analyze population structure and dynamics. 巴山冷杉幼苗儲備豐富，巴山冷杉自身的生物學(xué)特性及環(huán)境因素是形成這種現象的主要原因；
- Population structure of Betula dahurica families in Xiaolongmen forest farm was assayed.The specific life table was drawn.According to the table,the survivorship curve and death curve were analyzed. 調查小龍門(mén)林場(chǎng)棘皮樺林的種群結構,編制棘皮樺的生命表,繪制種群的存活及死亡曲線(xiàn)進(jìn)行生存分析。
- A complete methematicdl model of the exmponential curve type shearer drum hub and vane and a CAD method for expansing helical vare are descrided . 以指數曲線(xiàn)滾筒為代表，建立了異形滾簡(jiǎn)及其螺旋葉片的完整數學(xué)模型。
- ROC analysis showed the sub curve area of the combined standard was biggest, followed by the morphologic one and curve type one in sequence, with the Az values 0. 967, 0. 963 and 0. 908, respectively. 三種判定標準的評定結果經(jīng)ROC曲線(xiàn)分析，采用結合形態(tài)學(xué)及動(dòng)態(tài)增強時(shí)間一信號強度曲線(xiàn)標準AZ值最大，其次分別是形態(tài)學(xué)標準，動(dòng)態(tài)增強時(shí)間一信號強度曲線(xiàn)標準，其AZ值分別是0.;967。 0
- The structure simulation test, thick board welding test, parts strength test and bolt shearing test in design were carried out, which surmounted the design difficulties such as lamellar tearing and considered Eiffel effect of curve type tower. 設計中進(jìn)行了結構模擬試驗、厚板焊接試驗、部件強度試驗和螺栓剪切試驗等,克服了層狀撕裂等設計難點(diǎn); 考慮了曲線(xiàn)型塔的埃菲爾效應。
- When the interval curve type of adjacent well is cylinder helical,the constraint equation of the near distance spot of adjacent well is simplified further by mathematical manipulation. 在鄰井井段曲線(xiàn)類(lèi)型為圓柱螺線(xiàn)時(shí),通過(guò)數學(xué)變換,將鄰井間最近距離點(diǎn)的約束方程轉化為一個(gè)形式更簡(jiǎn)單的約束方程;
- On the basis of analytic geometry, the projection curve types of intersection lines of cone and cylikder, cone and cone on V plane is hyperbola and cone and sphere is parabola. 中專(zhuān)制圖教科書(shū)中 ,對圓柱與圓錐軸線(xiàn)垂直相交時(shí) ,相貫線(xiàn)投影作圖 ,大都采用先找特殊點(diǎn) ,再用輔助平面法找一般點(diǎn) ,最后判斷點(diǎn)的可見(jiàn)性并描點(diǎn)連線(xiàn)的方法。
- In a printer, the removable type element. 印刷機上可拆卸的打印部件。
- Do you type the letter or take a rest? 你打信呢，還是休息呢？
- The headwords in this dictionary are in bold type. 本詞典的詞條用的是粗體字。
- He devises a new type of transistor. 他發(fā)明了一種新的晶體管。
- The falling star described a long curve in the sky. 流星在空中畫(huà)出了一道長(cháng)長(cháng)的弧線(xiàn)。
- This type of bulb screws into the socket. 這種燈是擰到燈座上的。
- A line segment that joins two points on a curve. 弦將兩點(diǎn)用曲線(xiàn)連接起來(lái)的曲線(xiàn)段
- This type of bicycle is up to date. 這種款式的腳踏車(chē)是最新式的。
- I don't think she's the artistic type. 我認為她不屬藝術(shù)家那類(lèi)的人。
- His spine developed a slight curve. 他的脊柱有點(diǎn)彎曲。
- She is not the type of girl that Daniel goes for. 她不是丹尼爾追求的那種女孩子。
- The coast sweeps (away) northwards in a wide curve. 海岸呈一大弧形向北伸展。
