查询词典 skeleton key

The synthesis of the pentacyclic skeleton of Et-743 and the construction of the five chiral centers thereof.1. The core pentacyclic skeleton of phthalascidin was constructed with L-dopa as the starting material via thirteen steps. First, two basic synthons, the C-1 functionalized tetrahydroisoquinoline compounds 8 and N-protected Z-dopa derivative 9, were prepared from L-dopa. They were coupled via amide bond to form the dipeptide compounds 10, which were the first key intermediates. Then the primary hydroxyl groups were transformed into the corresponding amino aldehydes 11 via Swern oxidation. Followed by the intramolecular Pictet-Spengler cyclization, the pentacyclic compounds 12 were synthesized.

五环骨架的构建及五个正确手性中心的确立：1.1我们以L-多巴为起始原料，经过多步官能团保护和转化合成了基本结构单元8然后和苯丙氨酸衍生物9，通过缩合反应生成酰胺中间体10，经Swern氧化得到醛化合物11，然后再次利用分子内改良的Pictet-Spengler反应一步构建c，d两环，得到五环骨架化合物12，最后，实现了21-位羰基向氰基的转化，得到了C-1位官能化的化合物14，化合物14不但具有和Et-743一致的五环骨架，而且分子中五个手性中心立体构型也与其完全相同：其中，3，位和13，位的手性中心由原料L-多巴带入，而1，位，11，位和21，位手性中心则通过不对称诱导而确立。

In view of the above factors, to a certain extent, affected the greenhouses of the application and promotion, plus the current bamboo, wood steel prices rising, the vast rural areas in urgent need of a low-cost, corrosion-resistant, resistant to moisture, anti-aging a new framework to shed Instead of the traditional bamboo, wood, steel materials, in the light of this, I units commissioned by the relevant departments, research institutions and the parties concerned under the guidance of experts, completed a "no-pillar greenhouses skeleton of" key project, supported by aircraft I developed a special formula units, the production of greenhouse skeleton without pillars of quality and cheap, quality higher than that of a steel frame, lower than the cost of bamboo, wood, the technical supervision departments test, the main performance indicators are as follows: the simulation of the actual scope: 5.8 - 6.8KN bending strength ≥ 3.3 KN compressive strength ≥ 20 KN water absorption ≤ 13

鉴于上述因素，在一定程度上影响了塑料大棚的应用与推广，又加之目前竹、木钢材价格不断上涨，现广大农村急需一种价格低廉、抗腐蚀、耐潮湿、抗老化的新型大棚骨架来代替传统的竹、木、钢材料，鉴于此，我单位受有关部门委托，在各方科研机构及有关专家的指导下，完成了《无支柱塑料大棚骨架机》的攻关项目，该机配以我单位研制的特殊配方、工艺生产的无支柱大棚骨架质优价廉，质量高于钢架，成本低于竹、木，经技术监督部门测试，主要性能指标如下：模拟实际受力范围：5.8-6.8KN 抗折强度≥3.3KN 抗压强度≥20KN 吸水率≤13

This article introduced systematically the polyester fiber rubber skeleton cloth design,the production and the quality control,and give de-tailed showing to the key post-processing working procedure production craft,this kind of product obtained the widespread application as the rubber skeleton cloth in the rubber profession.

介绍了涤纶橡胶骨架布的设计、生产和质量管理，对关键的后处理生产工艺作了详细说明。

Share the additionally a bit experience that plays me to make a station with everybody additionally, actually key word of the day on pop chart of dog of Baidu, search, week is very useful, it mirrorred near future netizen to be opposite the attention heat of what incident, what we need to do is the card that blends in these key word to us go among caption, but content is not certainly as pop chart content, but the content that can reflect key word, so to search engine, key word had, of content different those who let it believe us is to be achieved formerly, is not blind follow suit on the net duplicate, some key word it won't expire forever, we often blend in the key word of seniority to us inside the caption of all sorts of cards, as time passes, our forum it is dictionary of a keyword, I today Baidu spider assimilate to the word that is a deadbeat, so the heaven that my station is dish of all sorts of fastfood, name, to deadbeat that is greatest temptation.

另外跟大家分享下我做站的另外一点经验，其实百度、搜狗排行榜上的日、周关键字是很有用的，它反映了近期网民对哪些事件的关注热度，我们需要做的是把这些关键字融入到我们的帖子标题当中去，但是内容不一定是跟排行榜内容一样的，但是能反映关键字的内容，那么对于搜索引擎来说，关键字有了，内容的不同让它相信我们的是原创，而不是盲目的网上跟风复制，有些关键字它是永远都不会过期的，我们经常的把排行的关键字融入到了我们各种帖子的标题里面，久而久之，我们论坛它就是一部关键词字典，我今天把百度蜘蛛比作是一个食客的话，那么我的站就是各种小吃、名菜的天堂，对于食客来说那是莫大的诱惑。

First of all, the structure from the message, the message is divided into 3 parts: the first message, at the style, MAC address, so that packet transmission to reach the safety of the international financial sector standards; Secondly, the encryption method from the point of view, this The most prominent of the two systems were encrypted administrator password is encrypted on the card to encrypt passwords, especially for card encryption, the use of soft encryption service interface technology, using the work key, master key, the original password through the ciphertext key algorithm through two different DES encryption key to come up, we can imagine, I want to work at the same time key, master key, the text of the original secret password to a more difficult task, If the re-solution of the two DES, can be said to be completely impossible!

首先从报文结构上来看，报文分为3部分：报文头、报文体、MAC地址，使报文传输的安全性达到了国际金融行业的标准；其次，从加密方式来看，本次系统最突出的两个加密分别是对管理员密码进行加密、对卡密码进行加密，特别是对卡密码的加密，运用的是软加密服务接口技术，运用工作密钥，主密钥，原始密码通过算法得到密钥密文通过两次不同的DES加密才得出的密钥，可想而知，想要同时得到我的工作密钥，主密钥，原始密码密文本来就比较困难了，要是再解两次DES，可以说是完全不可能实现的！

The bit is the section of a key which is actually inserted into the door, and in the case of a skeleton key, the bit is very simple, and able to open a large number of doors with locks which are similar enough for the key to work.

该位是关键这实际上是插入到门口，在一个万能钥匙的情况下，一些很简单部分，并能打开门的锁是相似足够的关键大批工作。

Q: How does an archeologist tell a male skeleton from a female skeleton?

问：考古学家怎么区分男人还是女人的骨骼？

The necessity of the 3-dimensional modeling of the human foot-skeleton is discussed,and considering its characteristics such as being small and having complex shapes and a large quantity of bones and joints,the approach to the 3-dimensional finite element modeling of human foot-skeleton based on CT images with the thickness of 2 mm is studied.

讨论了建立人体足部骨骼有限元模型的必要性；针对其形状复杂、数量多、体积小和关节多的特点，分析探讨了基于2 mm层厚的CT图像建立人体足部骨骼三维有限元模型的主要途径。

Included here are fishes having either a bony skeleton, such as a perch, or a cartilaginous skeleton, such as a shark, or those lacking a jaw, such as a lamprey or hagfish.

以具有鳍及用腮呼吸为特征的一种冷血水上脊椎动物，包括多骨骼鱼类，如河鲈；或软骨鱼类，如鲨鱼；或无颚鱼类，如七鳃鳗或八目鳗类鱼

I am at a loss to explain the average skeleton's somewhat ludicrous mental predisposition, however. Perhaps the implausibility of its own existence makes the skeleton think it hilarious to hide in a barrel, cackling intermittently for some three hundred years until a victim happens by?

或许由于受难者在经历三百年的腐变过程中都喜欢隐藏在阴暗的角落，并且发出咯咯的响声，导致人们都不相信有骷髅的存在。

The circulation, consumption and reproduction of the trilogy have not only testified to its historical significance and literariness, but also invested it with new meanings.

该三部曲的流通、消费与再生产不仅验证了其历史意义及文学性，而切还赋予它以新的意义。

If he thought that he could buy me off, he would be wrong.

如果他认为他可以收买我，那他就大错特错了。