重鏈穩定區 的英文怎麼說

中文拼音 [zhòngliànwěndìng]
重鏈穩定區 英文
constant domain of heavy chain
  • : 重Ⅰ名詞(重量; 分量) weight Ⅱ動詞(重視) lay [place put] stress on; place value upon; attach im...
  • : Ⅰ名詞1. (鏈子) chain Ⅱ動詞(用鏈栓住) chain; enchain Ⅲ量詞(計量海洋上距離的長度單位) cable length
  • : 形容詞1 (穩定; 穩當) steady; stable; firm 2 (穩重) steady; staid; sedate 3 (穩妥) sure; rel...
  • : Ⅰ形容詞1 (平靜; 穩定) calm; stable 2 (已經確定的; 不改變的) fixed; settled; established Ⅱ動詞...
  • : 區名詞(姓氏) a surname
  • 穩定 : 1 (使穩定) stabilize; steady 2 (穩固安定) stable; steady 3 (物質的性能不易改變的作用) stabi...
  1. In this thesis, first, reasons and factors for the stability of loose rock dams were summarized according to the field surveys and certain expert ' s experiences. then, researches on block stability problems were reviewed, and according to the relationship between grain size and incipient velocity, it is found that the block weight is in direct proportion to 6 - 9 power of incipient velocity, and 50 % increase of the velocity will result in about 40 times change of the block weight. after that, experiments were conducted in a flume, focusing on the relationship between incipient velocity and some main factors including block weight, water depth over the dam, cross - section size, block material and river bed material

    本文首先根據散拋石壩損毀情況的現場調查資料,結合有關專家多年的整治經驗,總結出壩體的損毀原因及影響因素;對現有塊體性的研究成果進行回顧和總結,並針對散拋石壩的直接損毀現象,結合山河流的水流、地形特點,利用塊體粒徑與起動流速的關系,提出塊體量與起動流速高次方成正比的概念,流速50的增長可能導致塊體量接近40倍的變化;通過二維變坡水槽試驗,研究了壩體的主要影響因素,包括塊體量、壩頂水深、斷面尺寸、塊體材料(塊石和卵石兩種) 、護底等,結果表明對于山河流,試圖僅僅通過增加壩體單個塊體量或斷面尺寸來提高壩體性效果甚微;最後,根據西部地的自然、經濟、交通等條件,提出可以採用柔性混凝土鉸體等一類整體性較好的護面層作為散拋石壩的防沖毀措施,以期取得良好的工程效果。
  2. Many streptomyces species exhibit a very high degree of genetic instability which is usually manifested as genomic rearrangement such as large deletion, and high - level dna amplification of those sequences flanking the deletion

    許多黴菌表現出高度的遺傳不性,通常為大片段缺失或基因組排,以及缺失域兩側序列的高水平dna擴增。
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