新宿天鹅

NE Chhina's Shenyang rolls out two TIR cross-border routes_我的网站

风和日丽

A | (ECNS) -- Shenyang in northeast China’s Liaoning Province launched two cross-border transport routes simultaneously for the first time on Wednesday, namely, Shenyang-Baku (Azerbaijan), and Shenyang-Mongolia-Russia. On the day, a batch of locally produced frozen beverages cleared customs and underwent inspection under local customs supervision before being loaded onto TIR (Transports Internationaux Routiers) trucks bound for Baku. The route departs from the TIR Shenyang Consolidation Center, exits China via Baketu Port in Uygur Autonomous Region, and reaches Kuryk Port in Kazakhstan, where cargo is ferried across the Caspian Sea to Baku Port. Compared with the traditional path, the new route takes around 13 or 14 days for the whole journey, mitigating constraints brought by geopolitical conditions and extreme weather. Also on Wednesday, four trucks loaded with auto spare parts set off from the TIR Shenyang Consolidation Center. They will cross Mongolia through Erenhot Port in Inner Mongolia to Russia. The TIR Shenyang Consolidation Center has opened more than 10 cross-border routes covering six countries, including Russia, Belarus, Mongolia, Kazakhstan, Uzbekistan and Azerbaijan. It has dispatched 480 TIR truck trips in total, with cumulative cargo value standing at 272 million yuan (approximately $40.42 million). (By Intern Xu Wenda, Zhang Dongfang) 。　　昨晚官方消息：嫦娥七号任务不满足发射条件，不能在今年预定窗口实施。很多朋友问：啥叫窗口?为啥不能过几天再发? 发射窗口到底是个啥？嫦娥七号为何不能过几天再发？　　简单说，发射窗口就是允许火箭发射的一段时间范围。航天器能不能发、啥时候发，要看轨道、天体位置、测控、天气等一堆条件。普通近地卫星任务窗口相对宽松，错过几天等下一轮就行。但对于飞行距离远的航天器来说，发射窗口就没有那么宽裕。　　因此对于嫦娥七号任务来说，发射窗口的条件很苛刻。发射窗口到底是个啥？嫦娥七号为何不能过几天再发？　　先来了解嫦娥七号这次任务，它要去的是月球南极，寻找水冰存在的证据。

B | 那为什么选择南极，是因为月球自转轴倾角极小，太阳在南极几乎贴着月平线扫过地表面，部分高地遮挡极少，年光照率可达80%以上，形成“永昼”区;而周边撞击坑底部是永久阴影区，温度低至-230℃左右，水冰可能就藏在那里。发射窗口到底是个啥？嫦娥七号为何不能过几天再发？　　嫦娥七号主要靠太阳能供电，必须精准卡点，在南极优质极昼窗口开启前顺利抵达着陆。初步估算，全年真正适宜探测器稳定作业的优质光照窗口，大约只有100天。这个窗口不是每个月都有，更不是晚几天就能补上。

C | 一旦错过今年最佳时机，探测器抵达时南极光照已经衰减，设备供电、导航都会出问题，月面探测的作业窗口期也会压缩甚至丧失。　　所以官方说的是“不能在今年预定窗口实施”，而不是“延迟若干天”。

D | 发射窗口到底是个啥？嫦娥七号为何不能过几天再发？　　航天工程有一句老话：稳妥可靠，万无一失。这不是一句口号，而是一种选择——看似“错过”了一个窗口，其实是守住了航天的底线，也守住了对科学目标的敬畏。　　今年是中国航天事业创建70周年。70年来，中国航天正是靠着这份稳妥可靠、万无一失的精神，一步一步走向深空。