diameter at breast height 中文意思是什麼

diameter at breast height 解釋
胸徑
  • diameter : n. 1. 直徑。2. （顯微鏡等的）放大倍數。
  • at : 1 Air Transport（ation） 2 【電學】 ampere turn 3 antitank 4 Atlantic Time 5 alternative technolo...
  • breast : n 1 乳房；〈比喻〉營養的來源。2 胸；胸脯，胸膛；胸口；胸懷，心情。3 （山）腹；（衣服的）胸部。4 ...
  • height : n 1 高，高度；身高；海拔。2 〈常 pl 〉高地，山丘。3 高貴，卓越。4 絕頂，頂點；【聖經】天。5 〈罕...
  1. Result showed that different waterlogging depths have obvious effects on tree height, diameter at breast height, under branch height, trunk morphological structure, stem base form, and growth process

    結果表明：不同水分條件對池杉的樹高、胸徑、枝下高、干形、樹干基部形態及生長過程均產生明顯的影響。
  2. This paper gives a survey on experimental forestland. 25 tree species were selected, and arranged in order by average diameter at breast height, average height, average individual volume and annual average volume increment in a unit area in this experiment

    摘要簡要介紹了試驗林地的概況，選擇了25個樹種進行試驗，並按各樹種林分平均胸徑、平均樹高、平均單株材積和平均單位面積蓄積的年平均生長量進行排序。
  3. The investigation on the species and amount of the pest in burned forest in heihe area showed the plantation of pinus slyuestris var. mongolica and larix gmelinii were easily attracted by ips spp. and anoplophora spp. the relationship between the smoked height and diameter at breast height of poles and the occurrence of the pests was analyzed with binary logistic regression

    摘要文章通過對黑河地區過火林地的蟲害發生數量和種類的調查研究，表明樟子松和落葉松人工林在火燒后極易受到小蠹類和天牛類蛀干害蟲的攻擊。
  4. The paper introduced the definition and sort and field arrangement and remote monitoring of field sensor ( a new combination of remote monitor and control and network and sensor ). then tried to make use of transfer image to reconstruct tree diameter at breast height through stereo vision, the result was fairy well to realize measure diameter without field survey

    首先對其定義、種類、外業設置及遠程監控操作做了簡單的介紹，然後嘗試利用原野服務器傳回的圖像，通過立體視覺技術重建遠隔地樹木的胸徑，得到了較為滿意的結果，從而實現了不到現地便能夠測量直徑的目的。
  5. To undertake, as quickly as reasonably practicable, a campus - wide survey of trees of conservation value which includes protected tree species as stipulated by the government, any tree with a diameter of 500 mm or above at breast height, and any tree of historical value including those planted by a donor or on a special occasion

    在可行的情況下盡快進行一個整體校園有關樹木保育價值的調查，其中包括政府所指定的受保護樹木品種，任何胸徑達500毫米或以上的樹木，及任何具歷史價值的樹木，包括由捐贈者或於特別場合下栽種的樹木。
  6. By using the total station, the surveyors can determine a set of measurable factors, such as upper diameter, diameter at breast - height and tree height, and then calculate the volume

    其測量樹高的精度可達1 / 1400 ，測量任一處直徑的精度可達1 / 200 ，且均高於其它測樹方法的精度，完全能夠滿足林業測量的精度要求。
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