reproductive rate 中文意思是什麼

reproductive rate 解釋
繁殖率,生殖率
  • reproductive : adj. 1. 生殖的。2. 再生產的，再現的。3. 多產的。adv. -ly
  • rate : n 1 比率，率；速度，進度；程度；（鐘的快慢）差率。2 價格；行市，行情；估價，評價；費，費用，運費...
  1. Directed on the present situation and existing problems in boosting beef cattle industry based on the yellow cattle improvement in china, the review indicated that several relationships, such as integration of individual households and large scale cattle farms, integration of yellow cattle improvement, crossbreeding, breed conservation and utilization, integration of high grain diet intensified fattening and low grain diet economic fattening, should be handled properly ; and the requirements of profitable cattle industry for increasing reproductive survive rate, using hybrid vigor and improving the weight gain, the main factors affecting economic return of large scale cattle farms and the technology level improvement in cattle industry were duiscussed as well

    本文就近來我國以黃牛改良為特點的肉牛業蓬勃發展現狀與存在問題，指出應處理好養牛經營形式千家萬戶與規模牛場相結合、黃牛肉用與肉役兼用相結合、黃牛改良選育與雜交、保種及利用相結合、高精料強度肥育與低精料適度育肥相結合等幾個問題；並就提高養牛經濟效益對提高繁殖成活率、充分利用雜種優勢、提高日增重的要求和影響規模牛場經濟效益的主要因素及如何提高養牛科技水平等問題提出探討。
  2. " both species of fish are being caught in substantial numbers through directed fisheries and as bycatch, but they are extremely vulnerable to exploitation, due to their slow growth, low reproductive rate, long gestation periods, and late maturity.

    這兩個品種被人類大量獵殺，又經常成為間接漁獲，加上其生長速率緩慢繁殖力低懷孕期長及遲熟，極易受濫捕的威脅。
  3. Qiupuriver mandarinfish is a local breed under selecting and a famous brand of chizhou city, anhui province, which has a big reproductive population and culturing on a large scale ; it also possesses of sound features such as high growth rate and strong resistance. but none study has been carried on its genetic basis before. study on the genetic variation of qiupuriver mandarinfish, changjiang mandarinfish and wanfuhu mandarinfish with isozyme and rapd markers has important content, at the same time, it will bring new material to selection and application of the qiupuriver mandarinfish

    秋浦河鱖魚是我省選育中的一個地方品種，具有生長快、抗逆性強等優良特性，已形成一定的繁殖與養殖規模，並成為我省池州市重點推廣的名牌產品；但對其遺傳基礎的研究尚屬空白，本試驗對秋浦河鱖魚、長江鱖魚和萬佛湖鱖魚進行同工酶和rapd分析，以便為秋浦河鱖魚的選育與推廣提供基礎資料。
  4. " whale sharks, like many other shark species, are highly vulnerable to over - exploitation due to their long and low reproductive rate, " commented callum roberts of york university in the uk, who has researched whale sharks extensively in the caribbean

    他說， "由於鯨鯊的生命期很長，繁殖率又低，因此和很多其他的鯨類一樣，鯨鯊正面臨著被過度捕獵的危險。
  5. In order to explore the influence of ecological factors on plant physiological characteristics, we carried out a series of experiments on stipa baicalensis community. with the increasing of co2 concentrations, the transpiration rate of stipa baicalensis, either for vegetative shoots or for reproductive shoots were significantly increasing. the average transpiration rates of vegetative shoots were 1. 77 times sizes of reproductive shoots

    生殖枝與營養枝光合速率均隨模擬光輻射強度的增強而增大，營養校與生殖校分別在光輻射強度為1200 1400umol ? m士s 『及1000 1200umol ? m毛s1時達到光合速率的最大值，營養枝光合速率均值為生殖枝的1
  6. Investigation of infection rate of cytomegalo virus, rubella virus and toxoplasma gondii in married women at reproductive ages

    弓形蟲在已婚育齡婦女中感染率調查及檢測結果分析
  7. The average day between the first day of cohabitation and delivery was 68 32days during the non - reproductive season, hormonal drugs could promote pregnancy, and the effective rate was 61. 5 %

    在非繁殖高峰期給雄、雌性樹?用激素可使合籠時間縮短至61 14天，用藥有效率為61 . 5 % 。
  8. The average photosynthesis rate of vegetative shoots at all radiation gradients was 1. 35 times sizes of reproductive shoots. the transpiration rates of shoots were increasing with the intensity of simulated photosynthetic radiation

    兩種類型植株蒸騰速率日變化趨勢基本一致，在9 10時達到最大值，隨著氣溫和葉溫的升高，氣孔導度的降低，水分供應的減少，蒸騰速率逐漸減小。
  9. The average photosynthesis rate of vegetative shoots was 1. 72 times sizes of reproductive shoots. despite of differences in the physiological functions, the water use efficiency of vegetative and reproductive shoots had a linear increasing with the co2 enrichment. so we draw a conclusion that co2 enrichment can obviouely promote the water use efficiency of c3 plants

    29倍；模擬光輻射強度從0增至800umol ? m zs 」過程中，兩種類型植株水分利用效率均呈驟增趨勢，模擬光輻射強度超過800nmol ? m 」毛』 『后，水分利用效率增幅不大，甚至有所下降。
  10. Ecology and life history of the species, including its diet, natural habitat, reproductive rate, natural predators and local climate of its country of origin and whether there are any similar species in taiwan

    擬輸入之野生動物在其原產地食物種類、棲息環境、繁殖速率、天敵、氣候條件及國內有無現存相近種類等之生態習性資料。
  11. In 2001 the journal of reproductive medicine published a study by three columbia university researchers claiming that prayer for women undergoing in vitro fertilization resulted in a pregnancy rate of 50 percent, double that of women who did not receive prayer

    2001年《再生醫學期刊》刊出了一篇美國哥倫比亞大學三位研究員的研究報告，宣稱人工受孕的女性中，有接受代禱者的受孕率達50 % ，是沒有接受代禱者的兩倍。
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