连续

Photoinduced reactions of 1 with 15, 16 and 19 gave the corresponding annulation products 21 (58%), 30 (71%) and 35 (87%) directly in one pot sequential reactions.

二氯香豆素（1）可分别与2-和3-苯基苯并呋喃以及2-甲基-4-苯基噻唑在光照条件下经一锅内的连续反应直接合成增环产物21（58％），30（71％）和35（87％）。

Part 2. Annulation reaction of 3, 4-dichlorocoumarin (1) and 3, 4-dichloromaleimide (8) by a new general annulation strategy developed in this group with 2-phenylbenzofuran (15), 3-phenylbenzofuran (16), 2, 5-diphenyloxazole (17), 2, 5-diphenylthiazole (18), 2-methyl-4-phenylthiazole (19) and 2, 3-dimethoxy-1, 3-butadiene (40) were investigated.

二。在本课题组前一阶段提出的从二氯代环烯酮与1，1-二芳基乙烯的光化反应以及光化反应中得到的环丁烷产物的连续电环化反应对3，4-二氯马来酰亚胺以及3，4-二氯香豆素进行增环反应的工作基础上，研究了3，4-二氯香豆素（1）和3，4-二氯马来酰亚胺（8）与5个α-苯基取代的环烯烃2-苯基苯并呋喃（15），3-苯基苯并呋喃（16），2，5-二苯基噁唑（17），2，5-二苯基噻唑（18），2-甲基-4-苯基噻唑（19），以及一个丁二烯——2，3-二甲氧基丁二烯（40）进行的芳香族增环反应。

The conversion of the cyclobutanes to the corresponding annulation products was achieved by a reaction sequence of [elimination of HCl in the cyclobutanes-4 electron electrocyclic ring opening-6 electron electrocyclic ring closure-elimination of another HCl molecule] .

这些环丁烷产物向增环产物的转化是经一个[脱除－分子HCl得环丁烯－环丁烯电环开环为丁二烯－6电子电环闭环－脱除另一分子HCl]这一连续反应进行的。

The anomalistic year is the time between successive transits of the Earth through the perihelion.

近点年是地球连续两次通过近日点之间的时间。

The anomalously low friction phenomenon is one of the typical dynamic phenomena in the deep block rock mass,reflecting the inconsistent and inconsecutive dynamic characteristics of deep block rock mass.

不规则超低摩擦现象是深部块系岩体典型动力学特征现象之一，集中反映了深部块系岩体非协调、非连续的动力学特性。

During the maximum of the 23rd solar cycle, the high energy particle radiation in the South Atlantic Anomy of 860 km altitude had been detected for more than three years by the space particle composition detector.

在第23周太阳活动峰年期间，空间粒子成分探测器对860km高度的南大西洋负磁异常区高能粒子辐射进行了长达3年的连续探测。

ABSTRACT: From the views of urban economics, urban sociology, political economics, anthropogeography, and urban planning and urban design, this paper attempts to generalize the research literature on "urban spatial expansion", and to find a theoretic relationship between urban expansion and its influential factors.

针对"城市空间扩展"的研究，本文尝试从城市经济学、城市社会学、政治经济学、人文地理学和规划设计学等几个视角分别概括和归纳国内外城市研究者的相关成果，为在连续的时空背景下全面综合地认识城市发展条件和影响因素提供必要的理论联系。

Results Of 84 621 patients, 79% received at least 2 consecutive days of antibiotic treatment.

在8万4621名患者中，有79%的人接受了至少连续2天的抗菌素治疗。

Theorem 3 Let be continuous on,and let be any antiderivative of on .

如果函数是连续函数在区间上的一个原函数

Theorem 2 If is continuous on the closed interval ,then = is an antiderivative of on .

如果函数在区间上连续，则函数=就是在上的一个原函数。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。