黑变

Combined with available data, it is comidered that the sourcerock of biotite--leptynite might be intermediate-acid volcanic material of ca.2.7 Ga, and that of migmatized leptite and quartzite might come from granitic crust older than 3.0 Ga. The iron formation was formed on the continental crust base at about 2.7 Ga, and was immediately metamorphosed for the first time.

结合已有的研究资料可以认为，黑云变粒岩的原岩来自2.7 Ga左右的中酸性火山物质，浅粒岩和石英岩的原岩来自3.0 Ga以上的花岗质地壳物质；含铁建造形成于陆壳基底之上，形成时间约2.7 Ga，并于2.5—2.7 Ga之间发生首次变质作用。

We think main metamorphic rock types of this area include mited granite ,mixed metamorphic rock,leptite,etc.

认为变质岩中混合花岗岩、混合岩化变质岩、变粒岩、浅粒岩、黑云斜长片麻岩等为本区的主要变质岩类型；沉积岩以云岩、硅质岩和石英砂岩为主；火成岩脉主要为辉绿岩、煌斑岩和闪长玢岩。

The zircon was dated by using the technique of single-zircon stepwise evaporation-deposition with a thermal ion mass spectrometry (Bernd Kober, 1986 and 1987). The zircon ages are 2.60-2.54 Ga for biotite-leptynite, 3.36-2.62 for mimatized leptite, and 3.53-3.08 Ga for quartzite from the iron formation.

用热离子质谱计双带源蒸发—沉积测定单个锆石晶体年龄的方法对弓长岭含铁建造中黑云变粒岩、混合岩化浅粒岩和石英岩中的锆石作了测定，获得了2.60—2.54 Ga，3.36—2.62 Ga和3.53—3.08 Ga等年龄数据。

These results suggest that pyriproxyfen obviously influences the larval growth to adult worker bees, especially in the pupal growth. The lower dose of pyriproxyfen results in abnormal eclosion, and more effects respond to the increasing doses, the treated larvae gradually appear the failure to eclosion, melanic death in the pupal stage, and death in the larval stage.

上述结果显示，百利普芬对成蜂的毒性较低，却会明显影响蜜蜂幼虫的生长发育，低剂量会造成蜜蜂羽化不完全，随著剂量的增加，处理幼虫的发育有提早的现象，处理幼虫会渐次出现蛹体变黑死亡，羽化失败死亡，甚至幼虫期即死亡的现象。

Bread aroma is enhanced, as is the crust color, by a build-up of melanoidin compounds from nonenzymatic browning reactions.

面包的风味改善了，面包表皮的颜色也由于非酶褐变反应所生成的类黑精化合物而有所改善。

Methods 38 cases taking ASA in 2 months were selected as bleeding group and they all had different degrees of symptoms including hematemesis、melena or positive occult blood of stool;30 cases taking the same drug without the sign of gastrointestinal bleeding were recouited as control group.The indexes were compared,including the change of hemodynamics、the occur rates of ASA related dyspepsia symptoms、 peptic ulcer or bleeding history and positive rates of H.

选择服用ASA在服药2月内出现呕血、黑便或大便隐血阳性的患者38例；对照组为30例服用相同制剂无消化道出血征象患者，比较两组患者血液流变学变化、药物致消化不良症状发生率、既往消化性溃疡病史及幽门螺杆菌阳性率等指标。

Her smile paled and melted into tears, and she went back alone into the dark.

她的微笑融入泪水中变得黯淡无光，她独自回到黑暗中去。

His skin is rosier, his eyes are brighter and the dark circles around them have disappeared.

他的皮肤变得红润、眼镜更加有神、黑眼圈消失。他对生活的态度发生了变化。

His skin is rosier, his eyes are brighter and the dark circles around them have disappeared.

他的皮肤变得红润、眼镜更加有神、黑眼圈消失。

Suddenly the sky darkened, and then the song good song drunk Minghao moon space, good dance in the wind Dance Salicaceae lower.

天色骤然变黑了，这时善歌的歌醉了皓空明月，善舞的舞低了杨柳轻风。

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