It is shown that the value of differential cross section of 〓He from 〓He+〓Be breakup reaction is approximately two-times larger than that from 〓Li+〓C reaction at similar incident energy.

與相近能量的〓Li+〓C的破裂α碎片微分截面相比〓He的破裂α碎片的微分截增大了約一倍。

In this, A new methods was introduced, which employed a polarized polyvinylidene fluoride polymer film and fast electronic pulse techniques.

最后在對于近地軌道上空間碎片的分布情況進行深入分析国产iGAO手机视频网，根據(jù)探測需求提出了一個空間微小碎片探測器方案欧美午夜三级缴情性影院。

For debris objects in a given altitude or inclination bin, the average rate of crossing the radar fence is derived.

隨著載人航天與空間站等航天活動的增多，不能有效防護欧美性爱网站地址、也無法定期跟蹤和編目的小尺寸（尤其是1~10cm）碎片的危害越來越受到關(guān)注午夜a一级毛片视频网站在线免费观看，這些碎片信息的獲取依賴于統(tǒng)計采樣技術(shù)欧美精品手机在线一级播放。

Shiel- ding of millimeter-size space debris has been a problem must be considered in design of spacecraft structure.

日益增長的空間碎片對在軌航天器的安全運行構(gòu)成了嚴重威脅久艹a免费视频，毫米級空間碎片的防護已成為航天器結(jié)構(gòu)設(shè)計必須考慮的問題之一那里有黄色毛片看。

Alister found records of a third shard in Kazakhstan, but Amanda broke into the manor and learned its whereabouts from him.

阿利斯特找到了位于哈薩克斯坦的第三塊碎片的資料，但阿曼達破門而入并從他那里得知了那塊碎片的所在′久久九九在线视频。

Alister found records of a third shard in Kazakhstan, but Amanda broke into the manor and learned its whereabouts from him.

阿利斯特在哈薩克斯坦找到了第三塊碎片的檔案欧美h福利网站，但阿曼達破門而入并從他那里弄清了那塊碎片的所在。

=Alister found records of a third shard in Kazakh stan, but Amanda broke into the manor and learned its whereabouts from him.

阿利斯特在哈薩克斯坦找到了第三塊碎片的檔案欧美一级黃色视频在线观看，但阿曼達破門而入并從他那里弄清了那塊碎片的所在欧美性爱第十页。

At first glance the task of joining that many shreds looks impossible, even when each shred has been scanned so that the matching can be done by machine.

乍一看，拼接這么多碎片的任務(wù)根本不可能一级片在线观看，就算每片碎片都被掃描中国精品jizzjizz，可以用機器來做匹配處理。

Microhistological fecal analysis is an important technique for investigating herbivore diets.The conventional mounting technique uses Hoyer's mounting medium to seal the plant fragment to the slide.

糞便顯微組織分析法是研究食草動物食性的主要方法影音先锋今日资源，其常規(guī)裝片技術(shù)需要使用Hoyer's裝片介質(zhì)對植物碎片進行封片成人日韩欧美一区二区免费，而Hoyer's封片液的粘性易導(dǎo)致植物碎片在裝片過程中發(fā)生卷曲和重疊，影響植物碎片的識別效果日韩三级视频免费。

Based on probability theory, a method for describing and calculating the collision probability between rendezvous and docking vehicle and debris is presented, and the method involves quantitatively analyzing the collision probability using quasi maximum instantaneous collision probability and total collision probability. The method calculating the indexes is developed, and the input required to perform a calculation includes the respective state vectors, position error covariance matrices and physical sizes of objects involved.(3) Two methods to analyze relative trajectory safety between chaser and target are developed, which are 3-sigma ellipsoid based methodology and collision probability based methodology.

1分析了交會對接各階段面臨的主要軌跡安全威脅成年人观看黄色网站免费，闡述了被動和主動安全策略、目標器的交會對接控制區(qū)域等保證交會安全的措施久久影院无码专区人妻；(2)基于概率思想發(fā)展了線性和非線性運動情況下飛行器與空間碎片的碰撞判斷方法免费网站看AⅤ片在线观看，提出采用總碰撞概率和擬最大瞬時碰撞概率來綜合描述飛行器與空間碎片的碰撞危險程度，推導(dǎo)了通過飛行器和空間碎片各自的狀態(tài)矢量wwwav免费在线、位置誤差協(xié)方差矩陣以及形狀尺寸來計算碰撞概率的公式在线观看人成网视频；(3)提出了兩種分析追蹤器和目標器之間相對軌跡安全的新方法：基于3σ橢球的軌跡安全分析方法和基于碰撞概率的軌跡安全分析方法。