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Reinhard Genzel obtained compelling evidence for this conjecture by developing state-of-the-art astronomical instruments and carrying out a persistent programme of observing our Galactic Centre for many years, which ultimately led to the discovery of a black hole with a mass a few million times that of the Sun, in the centre of the Milky Way.

莱因哈德E根舍对这个挑战性的猜测，找到了证据。他发展了最先进的天文设备，并持之以琣a对银河系中心进行长达数年的观测，终於笫一个获得确切证据，发现在银河系中心有一个黑洞，其质量是太阳质量的数百万倍。

At last ,this pater prove that the Coxeter mat rix of A has a composition of the fundamental reflections with the condition that Q has no oriented cycles.

然后利用A 的Cartan 矩阵和对称双线性型定义了A 的基本反射，并利用数学归纳法证明了在Q 无有向圈的条件下， A 的Coxeter 矩阵可分解为基本反射的乘积。

Methods: 48 casted Ni-Cr alloy metal specimens (12.0 mm×1.0 mm) were fabricated with ShoFu Vintage Halo porcelain and divided into six groups , eight pieces for each group. They were polished against 200-, 400-, 600-, 800-, and 1,000-grit sandpaper after body porcelain sintered, respectively. The specimens in a sixth group not polished was used as control. Surface roughness and Color parameters of the specimens were measured with a Surface Roughometer EX2154-13 and a spectrocolorimeter respectively.

铸造厚度1.0 mm、直径12.0 mm的镍铬合金试件48片，平均分为A～F 6组，每组8个，用等厚的松风Halo A2色粉状遮色瓷，体瓷和釉质瓷构筑金属烤瓷试件。A组体瓷不进行打磨，作为对照；B、C、D、E、F组分别用200、400、600、800、1 000目的水砂纸打磨体瓷表面；然后用表面粗糙度测试仪EX2154-13测量各组的表面粗糙度。

Declarer ruffed a club, cashed ace and king of diamonds, and led a low heart to the eight, nine and queen. You had to think for quite a while about the possible distributions, and you decided finally on a spade shift - queen, ace, five.

庄家继续将吃一个梅花，兑现A和K，手上出小红心到8，9和Q，你必须先想想牌张可能的分布情况，然后决定换攻黑桃——Q，A，5。

Peaking about the movie on her blog, Sarif said, First up, it's been rated 'A'– I was thrilled, as everyone likes to get an 'A' grade for their creative genius – but Hanan quickly explained it was for 'Adults Only'.

arif 在她的Blog上说&本来，一听说影片被评为&A&级，我太鸡冻了！人人不都想拿A成绩吗–但是Hanan 立马和我解释说，那个&A&是指&Adult only。

Assume that A/AH is a semisimple extension and A is a flat right AH-module.

假定A/AH是半单扩张且A是平坦的右AH-模。

Periplocoside A, a pregnane glycoside, is a new nature product compound isolated from P. sepium Bge.

本研究报导了从北五加皮中提取出来的一个新的孕烷苷类化合物杠柳苷A (Periplocoside A， PSA)。

The principal best management practices for Costa Rica are: a well drained soil or a good drainage system in the field (banana yield is hurt with only a few hours of oxygen depletion in the root zone), b adequate control of nematodes, c adequate control of black sigatoka and d a good fertilizer program which includes rates of fertilizer equal or higher than 300-300-600 kg/ha/year of N- P2O5- K2O split in 12 applications during the year.

这些最好的管理措施为： a ）良好排水土壤或田间良好排水系统（根区缺氧几小时就会损害香蕉产量）， b ）有效地防治线虫， c ）有效地防治香蕉叶斑病和 d ）良好的施肥计划，施肥量等于或高于300-300-600公斤 N - P2O5- K2O /公顷/年，一年中分12次施入。

This paper gives the quantization of a color image in a horrogeneous color space of L *a *b *, which is transformed from a nonhomageneous color spece of RGB.

采用了将RGB非均匀颜色空间变换到L a b 为基准的均匀颜色空间的方法，在L a b 均匀颜色空间中对彩色图像进行颜色量化，从而解决了量化误差相对人眼不均匀的问题。

The expressions of VEGF mRNA in renal cortex in B and group C increased greatly compared with A group at 8th week(P.01), And the expression was decreased more in C group than that in B group at the 8th week;④The light microscopes results showed that no pathological changes in group A; pathological changes were much obvious in group B:glomerular capillary lumen tumbling,lumens blocked,mesangial region widened,basal lamina thicking,mesenterium base inceased,the volume of glomerulus become large,cell population increased,renal tubule vacuolization, renal interstitium was infiltrated by lots of lymphocyte and mononuclear macrophage; pathological changes in group C was light,only see glomerular capillary lumen lightly stegnosis,few lymphocyte infiltrating.

免疫组化结果显示第8周B组大鼠肾皮质VEGF蛋白含量较A组显著增加(P.01)，C组VEGF含量较B组有明显减少(P.01)，C组较A组表达量仍然增加(P.01)；③第8周B组肾皮质VEGF mRNA表达较A组有明显上调(P.01)，与B组相比，辛伐他汀可以明显减少C组肾皮质VEGF mRNA表达；④光学显微镜下A组肾小球毛细血管腔均匀一致，无狭窄，肾小管-间质无炎症细胞浸润。B组则病变较明显：大鼠肾小球毛细血管袢塌陷，管腔闭塞，系膜区增宽，基膜增厚和系膜基质增多，肾小球体积增大，出现玻璃样变；肾小管尤其是近区小管肿胀、变性、空泡形成，肾间质可见大量淋巴细胞和单核巨噬细胞浸润。C组病变较轻，可见肾小球毛细血管管腔轻度狭窄，肾小管-间质见少量淋巴细胞浸润。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。