七十个

With the exception of the 170mm M-1978 Koksan gun first noted in a parade in 1985, a new turreted self-propelled gun observed in a 1992 parade, and perhaps a few other systems, most artillery was developed from older Soviet and Chinese designs.

与例外，该一百七十〇毫米米- 1978年的谷山郡首先指出，在一个操在1985年，一个新的turreted自行火炮，观察在1992年阅兵，也许其他几个系统，最炮兵制定了从旧苏联和中国的设计。

In this paper, the effects to image reconstruction by adopting different ways of sequence's truncation in unrelaxed iterative algorithm is discussed and further studying on the conditions to iterative reconstruction with phase -only have been done.

Sh~n在1949年发表了采样定理，提出在一定条件卜，可以用离散采样值重构带限连续信号。七十年代，l铭an等人提出了几个从零交叉点重构带通或带限信号的定理及其算法。1983年J.L.C.Salu和T.S.Huang对各种关于频谱有限信号外推问题的算法进行分析，提出了统一的迭代算法。

In one hovel, seven-year-old Ashraf is working a ten-hour day alongside his gaunt and bearded grandfather.

一间破屋中，七岁的阿沙拉夫每天要工作十个小时，他身边是面容憔悴、胡须满面的祖父。

This work, concentrated on the asymmetric allylation of aldehydes controlled by different chiral auxiliaries prepared from rotational pure tartaric acid, can be divided into three parts.The first part aims to review the developments of chiral drugs and asymmetric synthesis, from which derived the present research topic backgrounds and works.Synthesis and applications of allylation from aldehydes are the second part of the thesis. By optimizing the reaction conditions, such as solvents, temperature, time and chiral auxiliaries like N,N\'-dibenzyl tartamide, N,N\'-p-dimethylphenyl tartamide, N,N\'-o-dimethylphenyl tartamide, N,N\'-o-dichlorophenyl tartamide, N,N\'-a-dinaphyl tartamide, N,N\'-dicyclohexyl tartamide and N,N\'-diphenyl tartamide, ideal experimenttal conditions are obtained according to HPLC monitoring, as well as the auxiliaries\' recoveries experiments. Starting from benzaldehyde and 3-bromopropaldehyde, N,N\'-dibenzyl tartamide is considered the best auxiliary in this reaction.

本文介绍了醛的不对称烯丙基化反应，以光学纯酒石酸为原料，研究了不同构型手性配体在醛的烯丙基化反应中的立体选择性，全文共分三部分十个章节：第一部分对当前手性药物和手性技术进行了概述，并由此展开了本文的研究背景和任务；第二部分为有机合成部分，对醛的不对称烯丙基化反应进行了深入探讨，以苯甲醛为原料对反应条件进行优化，在优化的反应条件下对制备的七种可回收手性酰胺配体(N-苄基酒石酸二酰胺、N-对甲苯基酒石酸二酰胺、N-邻甲苯基酒石酸二酰胺、N-邻氯苯基酒石酸二酰胺、N-a-萘基酒石酸二酰胺、N-环己基酒石酸二酰胺和N-苯基酒石酸二酰胺)进行筛选，优化配体回收实验条件，最终确定出N-苄基酒石酸二酰胺在苯甲醛的不对称烯丙基化反应中具有较大优越性，结晶回收的手性配体光学纯度保持不变。

It naturally denotes the date of his arrival in Egypt with a reference to the years of rule of the then monarch, the Egyptian Ptolemy Euergetes; and in point of fact, the Greek grammatical construction of the passage in the prologue is that usually employed into the Septuagint version to give the year of rule of a prince cf.

这自然是指当日在抵达埃及提及多年的统治，当时的国王，埃及托勒密Euergetes ；并在事实上，希腊语法建设的序幕通行的是，通常雇用的七十版本给予一年的第一个王子（参见哈1：1 ，第10条；撒迦利亚1：1 ， 7 ； 7：1 ； 1马加比12点42分； 14：27 ；等等）。

The first is a journey into the past and present of graphic design in Italy, to understand its most significant aspects and analyse its relation to the international scenario, studying the players in its most prolific period, until the seventies, followed by the next generations and culminating in an overview of contemporary design with the IT revolution and recent cross-fertilisation with comparable languages, such as web, video and ultimedia design.

第一个是对过去和意大利目前的图形设计，了解其最重要的方面，并分析其对国际关系研究的情况在其最旺盛时期的球员，直到七十年代的旅程，在随后的下一代最终在一个现代设计的概述与IT革命和最近的交叉比较的语言，如网络，视频和ultimedia设计，施肥。

A boy would have been dull indeed who could spend six or seven years studying Latin for about ten hours a day and yet could not get good command of the language.

要让一个孩子每天花十个小时去学拉丁语，学了六、七年仍学不好，那么，他确实会感到枯燥无味。

One of her early and most popular songs was called "See My Seventy Two Changes"(it referred to growing up, not donning multiple outfits).

她的早期和最流行的歌曲之一是所谓的&看我七十二变&（它指的是成长过程中，没有穿上多个服装）。

Seventy-five igloos at Nellis store "one of the largest stockpile in the free world," according to the U.S. Air Force, one of four central storage sites in the United States.

在内利斯七十五处圆顶形建筑的储藏依照美国空军称&自由世界最大的储藏之一&，是在美国四个中央储藏地点的其中之一。

He traveled more than 26,000 miles in 76 hours.

他在七十六个小时内飞行了超过两万六千英里的旅程。

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