短自回波 的英文怎麼說
中文拼音 [duǎnzìhuíbō]
短自回波
英文
short spin-echo-
To allow a wider choice to prospective home buyers, to make better use of public resources and to respond more effectively to short - term fluctuations in housing demand, the government has embarked on a partial shift in the provision of housing assistance from the conventional bricks and mortar approach to the use of housing loans to purchase flats in the private sector
政府已略為修訂提供資助房屋的方式，由以往直接興建資助自置居所，改為減建這類單位，為部分置業人士提供貸款購買私人樓宇。這項轉變除了使有意置業的市民有較多選擇外，還可更有效地運用公營資源，對房屋需求的短期波動作出迅速的回應。The use of wave packet to analyze the dynamics of quantum mechanical systems is an increasingly important method to the study of the classical - quantum correspondence. using the quantum gaussian wave packet analysis method, we calculate the autocorrelation function of the rectangular billiard, the peak positions of the autocorrelation function match well with the periods of the classical periodic orbits, which show that the period of the classical orbits can be produced by the time - dependent quantum wave packet method. we also discuss wave packet revivals and fractional revivals in the rectangular billiard, the results show that there are exact revival for all wave packet at each revival time. we find additional cases of exact revivals with short revival times for zero - momentum wave packets initially located at special symmetry point inside the billiard
利用波包分析量子力學體系的動力學行為在研究經典和量子的對應關系方面越來越成為一個非常重要的方法.利用高斯波包分析方法，我們計算了矩形彈子球體系的自關聯函數，自關聯函數的峰和經典周期軌道的周期符合的很好，這表明經典周期軌道的周期可以通過含時的量子波包方法產生.我們還討論了矩形彈子球的波包回歸和波包的部分回歸，計算結果表明在每一個回歸時間，波包出現精確的回歸.對于動量為零的波包，初始位置在彈子球內部的特殊對稱點處，出現一些時間比較短的附加的回歸Already many construction workers from poland and elsewhere are returning, partly because hot housing markets are cooling fast, partly because wages at home have risen in response to labour shortages
已經有許多來自波蘭和其它地方的建築工人正在返回國內，部分原因在於火熱的住房市場正在迅速降溫，部分原因則是在其國內，由於勞工短缺，工資已經上漲。
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