旋回

Based on the theory of Sequence Stratigraphy and the systematically analysis of strata which was closely focused on Lithostratigraphy, Biostratigraphy, Paleoecology Event Stratigraphy and Sequence Stratigraphy, four long-term base-level cycles can be recognized in the Mesozoic, each long-term base-level cycles can be further divided into intermediate-term to short-term base-level cycle. Eight intermediate-term base-level cycles are recognized in Mesozoic; Cenozoic can be divided into two structural base-level cycles, and can be further divided into seven long-term baselevel cycles.

应用层序地层学理论，在详细的岩石地层、生物地层、生态地层、事件地层和层序地层为核心的综合地层研究基础上，将中生界划分为四个长期基准面旋回，每个长期基准面旋回内部又可进一步识别出更次一级的旋回，侏罗系内部共可识别出8个次级旋回；根据钻井层序地层与地震地层划分结果，将北缘地区新生界划分为两个构造基准面旋回，其内部又可进一步划分为7个长期基准面旋回。

In the light of the paleoenvironmental significance reflected by the radiolaria, graptolite, brachiopod,sponge spicule and the rock character, its suggested that the greyish green mudstone at the basal WufengFormation of the Goujiaya section would be probably deposited in 60 to 100 meters deep water, theGuanyinqiao bed in 50 to 80 meters deep, and the radiolaria-bearing silicalite from Wufeng Formation inwater with 200 to 400 meters deep. Combining the above-mentioned water depth with the sea-level changecycles, the change range of every one of the 5 cycles could be further conjectured. They were in ascendingorder: 20～120 m, 80～130 m, about 150 m, 50～250 m, and in excess of 200 m.

根据放射虫、笔石、腕足类、海绵骨针以及岩性等对古环境的指示意义，认为五峰组底部灰绿色泥岩段产出时水深约60-100m，观音桥层水深约50-80m，在晚奥陶世最大海侵期(对应于T.typicus亚带下部)，水深约400m，五峰组含放射虫硅质岩沉积时最小水深约200m，结合以上海平面变化的5次旋回，从而推算出各旋回海平面的变化幅度：在第①旋回，海平面变化范围大致为20～120m；在第②、第③和第④旋回中，海平面变化分别为80～130 m、大约150 m和50～250m；第⑤旋回的海平面升降幅度大于200 m。

In the light of the palenenvironmental significance reflected by the radiolaria, graptolite, brachiopod, sponge spicule and the rock character, it's suggested that the grayish green mudstone at the basal Wufeng Formation of the Goujiaya section would be probably deposited in 60 to 100meters deep water, the Guanyinqiao bed in 50 to 80meters deep, and the radiolaria-bearing silicalite from Wufeng Formation in water with 200 to 400 meters deep. Combining the above-mentioned water depth with the sea-level change cycles, the change range of every one of the 5 cycles could be further conjectured. They were in ascending order: 20～120m, 80～130m, about 150m, 50～250m, and in excess of 200m.

根据放射虫、笔石、腕足类、海绵骨针以及岩性等对古环境的指示意义，认为五峰组底部灰绿色泥岩段产出时水深约60-100m，观音桥层水深约50-80m，在晚奥陶世最大海侵期(对应于T.typicus亚带下部)，水深约400m，五峰组含放射虫硅质岩沉积时最小水深约200m，结合以上海平面变化的5次旋回，从而推算出各旋回海平面的变化幅度：在第①旋回，海平面变化范围大致为20～120m；在第②、第③和第④旋回中，海平面变化分别为80～130m、大约150m和50～250m；第⑤旋回的海平面升降幅度大于200m。

Milankovitch orbit cycle consists of eccentricity, inclination and procession of equinoxes, which lead to palaeoclimatical cyclic transformation and form high frequency sequence, parasequence and beds with cyclic time of ten, four and two thousand years respectively.

米兰柯维奇天文旋回包括偏心率旋回、倾斜率旋回和岁差旋回，这几个轨道参数所驱动的古气候变迁，分别形成了周期为10万年(或40万年)、4万年及2万年的高频层序，即小层序组、小层序及小层单元。

The results show that one long-term base-level ascending hemicycle (including 1. 5 middle-term cycles, 10 short-term cycles and several super short-term cycles) is well developed.

结果表明，姚家组第二和第三段总体上为一个长期基准面上升半旋回，其中包括1.5个中期旋回、10个短期旋回及若干个超短期旋回。

During the course of the short-cycle correlation, This paper assembleds the descending cycle of early cycle and the ascending cycle of late cycle, which are conjointed together , begin to correlate and draw the ichnography . By this method , writer can consider the two connected sandbodies as one unit to analyse , and can contact the sand units of exploitatition in the oilfield. Then analyse the distributing and the continuity of the sandbodies in the medium-cycle, the distributing and the continuity of oil and gas in the short-cycle.

每个中期旋回包括 3-4 个短期旋回，在短期旋回的对比中，将垂向上相邻的早期短期旋回的下降半旋回和晚期短期旋回的上升半旋回组合到一起进行对比划分和平面成图，这使得相邻两套的粉砂岩作为一个单元进行分析，与油田开发中的小层紧密的结合到一起。

The formation process of the rocks is divided for thefirst time into three cycles corresponding to J2, J3, and K1, respectively, and each cycle into early,middle, and late periods based on intruding contact relationship among different types ofgranitoids.3. A detailed study on the petrological characteristics of different cycles of theMesozoic granitoids supports classification of the rocks into three lithological associationsincluding A-type, high-K calc-alkaline, and calc-alkaline granitoids, of which the first associationbelongs to alkaline series, and the others belong to calc-alkaline series. It is shown that thelithologies change from diorite, quartz monzonite, and granodiorite to monzonitic graniteand syenogranite with periods from early to late in each cycle.4. A preliminary summarization hasbeen made on the evolution characteristics of the rocks.

首次将中生代花岗岩类划分为J2旋回、J3旋回、K1旋回等三个旋回，并依据不同岩石类型间的侵入接触关系，将每个旋回又划分为早、中、晚三期。3、在详细研究区内中生代不同时期花岗岩类岩石特征的基础上，首次将区内中生代花岗岩类划分为碱性系列碱质A型花岗岩类以及钙碱性系列高钾钙碱性花岗岩类和钙碱性花岗岩类等二个系列三种岩石组合类型，确定每个旋回从早期到晚期，岩石均具有从闪长岩、花岗闪长岩、石英二长岩-二长花岗岩-正长花岗岩演化的趋势。4、初步总结了区内中生代花岗岩类的演化特征。

In accordance with the correspondence principle of medium?

根据中期旋回与准层序组相对应以及短期旋回与准层序相对应的原则，将广北 12 -斜 1井沙四段 1～ 4砂层组划分出 4个中期旋回，18个短期旋回，并运用旋回等时对比技术对广北地区进行了精细层序地层对

Cycles were recognized in the field and Fischer plots were used to analyse the cyclic sequence. 3 third_order and 12 fourth_order sea level curves were differentiated. The 84 cycles are considered to be of a kind of Milankovitch rhythms formed by the eccentric variation of the earth.

在野外共划分出了84个旋回层，用Fischer图解对马家沟组的旋回层序进行了分析，共划分出3个三级旋回，12个四级旋回。84个旋回层可能是因地球偏心率变化而引起的米兰柯维奇旋回。

Cycles were recognized in the field and Fischer plots were used to analyse the cyclics equence. 3 third-order and 12 fourth_order sea level curves were differentiated. The 84 cycles are considered to be of a kind of Milankovitch rhythms formed by the eccentric variation of the earth.

在野外共划分出了84个旋回层，用Fischer图解对马家沟组的旋回层序进行了分析，共划分出3个三级旋回，12个四级旋回。84个旋回层可能是因地球偏心率变化而引起的米兰柯维奇旋回。

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