頻率漂離 的英文怎麼說
中文拼音 [bīnlǜbiāolí]
頻率漂離
英文
frequency departure-
( 2 ) gene flow frequency was reduced as distance from pollen donor increased and a dramatic reduction occurred at about 2 meters. the maximum distance where gene flow was not detected was 50 m for hybrid rice while it was 70 m for ms lines, with an exception that in one of the four ms lines it was detected a frequency of gene flow 2. 8 + 10 - 6 at 150 m for zhong 9a
在開花期主流風向ne的風速為0 . 2 ? 2 . 2m / sec的條件下， 2個雜交稻品種的最大漂流距離為40m ； 4個不育系的基因漂流基本上到60m為止， 70m處基因漂流頻率均降為0 ，僅中9a在150m處發現了1株basta抗性苗，經pcr檢測驗證為陽性。At last, in according to the experiment results, the interpretation of the mechanism of the slip phenomenon of prepressing - contact spring - damping system was given in this dissertation. further more, the relationship among the limit frequency, the value of prepressing, excitation frequency, the amplitude of excitation and the materiel parameter was analyzed. base on the theory analysis the limit frequency formula was given, and the contact - slip condition for engineering application was concluded
最後根據理論研究與試驗分析的結果，分析預緊接觸式彈簧阻尼系統產生滑移現象的機理以及共振峰值漂移現象的理論解釋，並通過定性分析接觸分離時的頻率與預緊量、激勵頻率、激勵力幅值以及墊層的材料參數之間的關系，提出能定量描述系統出現滑移現象的極限頻率公式，總結了預緊接觸式結構始終保持接觸的條件。The saturation time in our simulation is consistent with the prediction of the theory. furthermore, we also studied the propagation of two pulses with inverse phase. in this case, the wakefield excited by the first pulse will be absorbed by the second pulse which shifts to higher frequency
此外，我們還研究「位相相反」的兩個脈沖在稀薄等離子體中的傳播，第二個激光脈沖由於吸收了前一脈沖激發的靜電場，頻率向高頻方向漂移，得到頻移的大小與符合理論推測。Based on data generated, we classify 8 recipients into three categories in terms of possible environmental impact : ( 1 ) low risk of gene flow to common cultivars ; ( 2 ) intermediate risk to common wild rice with same aa genome ; ( 3 ) high risk to ms lines. 2. development of a specific database for toxin and anti - nutrient proteins bioinformatics is a very useful tool for risk assessment of gm foods
從轉基因水稻的環境風險考慮，轉基因向常規稻的基因漂流頻率及最大距離都較小，相應地其風險也較低；向不育系的基因漂流頻率較高，最大漂流距離也較大，相應地其風險也較高，應重點考慮轉基因漂流對雜交稻制種純度的影響及其可能引起的環境風險後果；轉基因向普通野生稻的基因漂流頻率中等。分享友人