4D的意思
「4D」經常作為「4 times the Diameter」的縮寫來使用,中文意思:「直徑的4倍」。
4D(直徑的4倍)詳細解釋
- 英文縮寫詞:4D
- 英文單詞:4 times the Diameter
- 中文簡要解釋:直徑的4倍
- 分類:Miscellaneous
- 領域:Manufacturing
英文縮寫4D的擴展資料
- As a rule of thumb, the minimum device feature is about 4 times the beam diameter.一般來說,最小器件圖形大約是電子束直徑的4倍(4D)。
- By this formula, the adequate anchorage length for bars with the diameters of 14 and 16 mm is worked out to be 3 times of the bar diameters, and 4 times for bars with the diameter of 18 mm.運用該計算公式得出,直徑為14和16mm鋼筋的錨固長度適宜取3倍鋼筋直徑,直徑為18mm鋼筋的錨固長度適宜取4倍鋼筋直徑。
- The results show that the moisture diffusivity of frozen aluminum hydroxide sludge increases about 4 3 times as compared with unfrozen aluminum hydroxide sludge. That is caused by the increase in the diameter and porosity of sludge particles in the freezing process.顯然,冷凍后水分有效擴散系數比冷凍前大約增加了43倍,系由于冷凍使污泥粒子粗大化和多孔化所造成的結果。
- When the pollen tube extended to the stigma chord, and the length of the pollen tube was 4-10 times as the diameter of pollen, the generative cell split into two sperms.在花粉管進入柱頭溝時,管長為花粉直徑的4~10倍期間,生殖細胞分裂形成兩精細胞。
- The research results show that usually the critical open diameter of a hopper for dry particles is more than 3 times of particle diameter, but no less than 4 times for wet particles.結果表明:對于干顆粒,滿足不結拱的料倉開口度尺寸至少為顆粒直徑的3倍,而濕顆粒則要求料倉開口度至少為顆粒直徑的4倍(4D);