期

Centromeres could be identified easily on the bivalents at diplotene, so it was convenient to analyse the karyotype.

结果表明，日本沼虾染色体数n=52，2n=104，据双线期二价体的相对长度、着丝点位置以及形态诸方面的特点分析了核型，共分为A，B，C，D4个染色体组，核型组成是N=37M+4ST+11T；初级精母细胞减数分裂前期I可分为细线期/偶线期、粗线期、双线期和终变期5个时期，双线期的二价体存在弥散阶段，核仁明显，且双线期二价体着丝点清晰，给核型分析带来了方便。

Origin, developmental changes and homologies of the stage morphostructures were considered according to their location in three morphogenetic fields. The first, or central, field forms at the prodissoconch I stage. It can be inherited by prodissoconch II and nepioconch stages in one taxa, or PD-II, N and dissoconch stages in others. The second, or postero-dorsal, field appears at the N stage, and the third field, or antero-dorsal, at the D stage.

主要对3个形态发生区域的阶段形态结构的起源、发育变化和同源性做了研究，其一，即中央区域，开始形成于前双壳I期，在某个分类单元它可以在前双壳II期和幼贝期形成，而在其它分类单元则在前双壳II期、幼贝期和双壳期形成；第二区域，即背部后区，在幼贝期出现；第三区域，即背部前区，出现于双壳期。

Origin, developmental changes and homologies of the stage morphostructures were considered according to their location in three morphogenetic fields. The first, or central, field forms at the prodissoconch Ⅰ stage. It can be inherited by prodissoconch Ⅱ and nepioconch stages in one taxa, or PD-Ⅱ, N and dissoconch stages in others.

其一，即中央区域，开始形成于前双壳Ⅰ期，在某个分类单元它可以在前双壳Ⅱ期和幼贝期形成，而在其它分类单元则在前双壳Ⅱ期、幼贝期和双壳期形成；第二区域，即背部后区，在幼贝期出现；第三区域，即背部前区，出现于双壳期。

The fusion between the mutually contradicted forms of to sell and to buy the arbitrage. Their combined proposition, the dual arbitrage is the negation of the negation. Deducted by analogy, when summarizing all the trading forms, we can find that they all conform to the trinity philosophy of Hegel. As Marx said,"In Greek, this is the positive, negative and combined proposition. And to those readers who cannot understand Hegel"s language, we tell them a holly formula: positive, negative and the negation of the negation. All these trading forms follow the principles of the change of quantity and quality, the contradictive unification and the negation of the negation.

我们把套期保值交易看作正题，那么，卖出套期保值是肯定一一买入套期保值是否定，这两个包含在反题中的对抗因素的斗争，形成辩证运动；卖出套期保值和买入套期保值就可以互相转化；这两个彼此矛盾的交易，形成新的合题，就形成一个新的交易形式，即卖出套期保值和买入套期保值这两个彼此矛盾的融合，它们的合题——双向套期保值是否定之否定。

The inflammation reaction hyperplactic stage and lymphatic nodular stage are of nonspecific morphological changes and should be diagnosed with the help of positive tuberculin test and obvious increase of adenosine deaninase ; tuberculous nodular stage has a great number of epithelioid cells,and Langhans cells, caseous necrosis stage is characterized by a great deal of necrotic tissue and debris,a small number of fragmented epithelioid cells, and mainly by antiacid bacteria fibrinous hyperplastic stage is featured by a few fibrous tissue, cells and mucous oweing to hardness to get puncture, neans tuberculous restoration,and scar formation.

结核初期-炎性增殖期60例，占5.5%；结核早期-淋巴结节期130例，占11.9%；结核中期-结核性结节期有590例，占54.1%；结核晚期-干酪样脓样坏死期有280例，占25.7%；结核恢复期-纤维素增殖期30例，占2.8%。炎性增殖反应期非特异性形态学变化，需要结合结核抗体阳性和腺苷酸脱氨酶明显增高有助于诊断，结核结节期主要可有较多类上皮样细胞及郎罕氏细胞；而干酪样脓样坏死主要见大量坏死组织及碎屑、少数残碎不全类上皮样细胞，此期主要能查到抗酸菌为特点；纤维增殖期，抽出物难取，仅见少数纤维组织、纤维细胞和黏液间质为其特征，提示结核恢复、瘢痕形成所致。

Physiologically, our model estimated 2.6 days to reach the single ridge stage, 5.6d to the double ridge stage, 11.3d to the stamen and pistil initiation stage, 13.1d to the anther separation stage, 15.3d to the pollen mother cells stage and 18.2d to the tetrad stage. Phenologically, estimations were 13.1d to reach the jointing stage, 28.7d to the heading stage, 32.8d to the grain filling stage and 51.5d to the maturity stage. PDT was consequently used as a unified scale for measuring developmental progress of different cultivars under different climates and cultural practices.

经测算，各大麦品种到达单棱期、二棱期、雌雄蕊分化期、药隔形成期、雌蕊柱头二裂分叉期、雌蕊柱头毛状突起期等顶端发育阶段的生理发育时间分别为2.6、5.6、11.3、13.1、15.3、18.2、28.7d，到达出苗期、拔节期、抽穗期、灌浆期和成熟期等主要物候期的生理发育时间为0、13.1、28.7、32.8、51.5d，形成了不同大麦品种在不同气候和栽培条件下统一的衡量发育的定量尺度。

The testis index, testis volumes were same as the annual changes of testis mass. The curves of annual variation were all unimodality.2 The spermatogenetic cycle of Myospalax cansus comprises seven stages with significant features: Stage I , from February to April, the testis were at the stage of spermatogonia proliferation. In this period, testis index and the number of spermatogonia began to rise. Other spermatogenic cells had not yet formed; Stage II to III, from March to April, primary spermatocyte meiosis period. The testis index was highest in this stage, and spermatogenic cells were in spermatocyte stage, the primary spermatocyte meiosis generated to secondary spermatocyte; Stage IV, from April to May, spermatocytes continued to split, germ cells appeared in seminiferous tubules; Stage V, in May, sperm formation, spermatids of seminiferous tubules were transformed to spermatozoa, a large number of sperms existed in the lumen; Stage VI, spermatozoa emission period, from May to June, testis index were a significant drop and mature spermatozoa excluded gradually; VII, the testicular activity ceased basically from July to September, November to January of the following year, the spermatogenic activity ceased completely. Therefore, Myospalax cansus are animals of seasonal reproduction, spermatogenesis cycle is discontinuous type.

睾丸系数、体积和重量的年周期变化规律一致，变化曲线呈现单峰型。2甘肃鼢鼠雄性生殖腺的年周期活动由7个特征明显的时期构成：Ⅰ期，2～3月份，精原细胞增殖期，睾丸系数开始上升，精原细胞进行有丝分裂，其他生精细胞尚未形成；3～4月份为Ⅱ～Ⅲ期，初级精母细胞成熟分裂期，睾丸系数达到最大，生精细胞大多处于精母细胞阶段，初级精母细胞减数分裂生成次级精母细胞；Ⅳ期，4～5月份精母细胞继续进行分裂，精细胞在生精小管内出现；Ⅴ期，5月份，精子形成期，曲细精管中精细胞变态成精子，在管腔中存在大量的精子；Ⅵ期，精子排放期，5～6月份，睾丸系数显著下降，成熟精子从生精小管上脱离，逐渐排除；Ⅶ期，精原细胞停滞期，7～9月份睾丸生精活动基本停滞，11～翌年1月，生精活动完全停止。

According to the classification and stage principles of folds, we divided the folds into three stages. The first periodic folds: the prime folds of the Indosinian orogenic cycle; the second periodic folds: the intrafolial theomorphic folds of Post Indosinian; the third periodic folds: the superposed folds of Himalayan to Yanshanian.

根据褶皱构造的分类、分期原则，首次将雅砻江锦屏水电站地区褶皱划分为3期：第1期为印支造山期主褶皱；第2期为印支期后层内流变褶皱，第3期为燕山期－喜山期叠加褶皱。

The details is described as below: mixed with water and evenly atomized, 30-50g/mu for rice seedling, jointing, heading, flowering and filling stages; mixed with water and evenly atomized, 30-50g/mu for wheat seedling, stooling, heading, flowering, maturing stages; 30-50g/mou for corn seedling, big-horn tasseling, and maturing stages, mixed with water and evenly atomized, 26-32 days of drought resistance period.

具体为：水稻苗期、拔节期、穗期、扬花灌浆期30～50g/亩，兑水均匀喷雾；小麦苗期、分蘖期、穗期、花期、灌浆成熟期，用量30～50g/亩，兑水均匀喷雾；玉米苗期、大喇叭口期、抽雄期、成熟期用量30～50g/亩，兑水均匀喷雾，防旱期26～32天。

During the paleo-geography evolution, inland lacustrine basin began to form, and the two delta skirt in east and west lakeshore are primary formed in Chang 10, lacustrine basin subsidized quickly, lake district enlarged rapidly and destructive delta are developed in Chang 9, delta are more developed in Chang 8, lakeshore line move outward at large range, turbidite developed well near west lakeshore, delta range is decreased in east lakeshore in Chang 7, features of lacustrine basin are changed remarkably, deep lake and half deep lake area is decreased greatly, while delta sedimentary system is developed at its most in Chang 6, framewok is inherited better, but delta′s construction is slowed and is swamping at large scale in Chang 4+5, lacustrine basin began to be silting, shrinking and dying out, and riverway gradually developed well since Chang 3, distributary riverway developed best in Chang 2, because of imbalance subsidence, subsidence center is formed in east Zichang area and in which lacustrine turbidite is sedimented.

在古地理演化过程中，长10期内陆湖盆开始形成，东西两岸两大三角洲裙初步形成；长9期湖盆快速下沉，湖区迅速扩大，三角洲多为破坏性的；长8期三角洲进一步发育；长7期湖岸线大幅度向外推移，西部浊积岩发育，东部三角洲面积明显减小；长6期湖盆面貌发生了显著的变化，深湖－半深湖面积大大减少，三角洲沉积体系极为发育；长4+5期继承了长6的沉积格局，三角洲建设进程减慢，三角洲大面积沼泽化；从长3期湖盆开始逐步淤浅、萎缩、消亡，河道逐渐发育；长2期分流河道发育；长1期由于差异沉降，在东部子长一带形成沉降中心，沉积了湖相浊积岩。

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