天幕

According to the structure of aircraft carrier and existing anti-ship missile warhead,the structural target with ribbings and experimental semi-armor-piercing warhead were designed with geometer similar principle.The processes of warhead penetrating the ribbings structural and homogeneous targets were investigated experimentally in the shooting range,and the end-point trajectory parameters in hitting conditions and the breakage mode of target were gained.

以舰船典型筋板结构为目标，设计了带加强筋的结构靶，并用模拟实验弹体，对单层带加强筋的结构靶进行了斜侵彻实验，通过天幕靶和高速运动分析系统的测量，得到了两种倾斜着靶条件下不同着靶位置的靶前、靶后弹道参数；通过对靶板破坏结果的分析，得到实验弹靶条件下加强筋结构靶的破坏模式。

The beautiful sky has crowds of kite surf in the wings, that long-term arrhizus thin away my childhood dreams have taken away all my happy time, Under the Canopy is now clear that because of the side streams, the sun shine The more the merry increasingly clear flowing stream, dense shade of a tree under the lark in the loud voices singing loud and clear, this is my dream holiday start.

美丽的天空中有成群的风筝在展翅遨游，那根根细细的长线带走了我童年的梦也带走了我所有的快乐时光，如今天幕下清澈的溪流边那因着太阳的照耀而更加清澈的溪流越发的欢快流淌，茂密的树阴下有声音嘹亮的百灵在高声歌唱，这便是我梦想中假日的开始。

After many years of pioneering and development, are leading products of our factory have: Events folding tents, canopies assembled tube, car tent, camping tent, travel tent, advertising tents, rental tents, car show tent, poncho, telescopic boom, wood umbrella, aluminum umbrella, advertising umbrella, advertising arch, advertising flags and the Atrium shade tents and other outdoor supplies.

经过多年的开拓和发展，现我厂主导产品有：折叠式活动帐篷、管式拼装篷、汽车帐篷、露营帐篷、旅游帐篷、广告帐篷、租赁帐篷、汽车展示帐篷、雨披、伸缩臂架、木伞、铝伞、广告伞、广告拱门、广告彩旗和天幕帐篷等户外遮阳用品。

The experiment r esult indicates that the infrared sky screen has the advantages of large effective screen area, flexibility, high s ensitivity and strong antiˉinterference ability. The system can be utilized to measure the velocity of the several projectil es and trig the other pertinent equipments.

通过实弹测试表明红外天幕靶有效靶区大、灵敏度高、抗干扰能力强以及使用灵活方便等优点，适用于多种口径弹丸速度测量，也可用作其它设备的触发信号源。

Suddenly, a village pinpricks of light, the likelihood of pearl layer, and like the sky that winked at the world small eyes secretly landed midgard stars.

蓦然间，山村里亮起了星星点点的灯光，层层叠叠的，似一串串明珠，又像是天幕上那眨着小眼睛偷偷窥视人间的星星降落了凡尘。

The characteristic, principle, merit and disadvantage of this new ATS are discussed in details.

详细介绍了光纤编码天幕靶的组成、结构、特点和工作原理。

Thus roof of the house in Cepheus is pointing mostly north, even though – in tonight's sky – that means it's pointing sideways and downward.

因此仙后座中屋顶总是指向北，尽管如此——在今晚的天幕中它意味着指向小路和下方。

Explanation: Fading sunlight, a young crescent Moon, and brilliant Venus shared the western sky in this view of 2005's final sunset from the top of Mount Haleakala, on Maui, Hawaii.

说明：这是夏威夷州Maui岛Haleakala山2005年最后的日落。日薄西山，渐渐明亮的新月，和华美闪亮的维纳斯在西方的天幕中争辉。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐