变化范围

The diversity index of rotifers was the highest observed. The results show that the higher the trophic level of the lake, the higher the density diversity index of rotifers in definite trophic level range (from oligotrophic to mesotrophic).

轮虫类的多样性指数最高，并且当湖泊在一定的营养水平范围内（贫营养型向中营养型过渡）时，轮虫的密度多样性与湖泊的营养水平呈现相同的变化趋势。

The extinction or appearance of these Ostracoda always occurred in a short time interval, and can be correlated locally and globally, so they are of importance in bioeventstratigraphy. This article listed six such biological events in Qaidam Basin and discussed their causes. The extinction of Cetacella reflected temperature decrease at global scale and changes of palaeoclimate zones during the latest Jurassic and the earliest Cretaceous; The rapid decline of Cypridea in the earliest Cretaceous may be a result of the strikes of small planets; at the latest middle-Eocene Austrocypris became extinct, and at Oligocene Hemicyprinotus disappeared. These events related to the changes of the geological conditions at that time. The explosion of Cyprideis at the middle-Miocene was because the rise of Qinghai-Xizang Plateau which resulted in the dry climate and development of salt lakes.

这些水生生物的绝灭或发生均很迅速，在区域或全球范围内均可对比，具有生物事件地层学意义：Cetacella属的绝灭可能是侏罗、白垩纪之交全球性的古气候降温和气候带变化在柴达木盆地的反映；早白垩世之后Cypridea的迅速衰退是地外因素灾变的结果；中始新世晚期的Austrocypris的绝灭、渐新世Hemicyprinotus的绝灭都与当时地质条件的改变存在著内在的联系；中中新世Cyprideis的爆发推断是青藏高原隆升，导致气候乾燥、湖水咸化的结果；而晚更新世晚期1。

By using paleosols, the history of ancient paleoclimate change might be reconstructed while variation of atmospheric pressure of oxygen and level of carbon dioxide concentration during preCambrian and postCambrian periods, as well as paleoecological, paleogeographic features and paleolandscape were rebuilt. However, several problems should be tackled, e.g.

形成于晚第三纪以前的古土壤可以重建全球范围的古气候变化历史，同时揭示前寒武纪时期古大气O2分压以及后寒武纪时期古大气CO2浓度水平的演化过程；古土壤具有空间和时间等多重信息，能反映流域或区域的古景观、古地貌、古水文特征。

The paper studies the color range of papaver rhoeas red pigment under pH values, and compares it with the other indicators by the acid-base titration.

本文研究了虞美人色素在不同pH值溶液中的颜色变化，并通过虞美人色素和其它指示剂进行酸碱滴定的比较，结论为：虞美人色素能准确指示酸碱滴定的终点，其变色范围pH 6.33~8.25，颜色由紫红色变为棕色

The study results have indicated that the alloy layer thickness decreases with increase of Si addition, increases linearly with rise of bath temperature and varies parabolically with length of dip time.

结果表明：在实验研究范围内，随硅元素含量的增加，合金层厚度降低；随浸镀温度的升高，合金层厚度呈直线增加；随浸镀时间的延长，合金层厚度呈抛物线规律变化。

1Cubic millimeter tissue sampling was fixed with the mix of 1% glutaraldehyde and 4% paraform in 4℃.

利用兔后腿软组织损伤、海水浸泡模型，分别于损伤后浸泡于海水中2小时，浸泡后分别进行各种低渗盐水冲洗，分别于干预处理后1h、3h、6h、8h、12h，在损伤周围0.5cm范围内的肌肉组织中取材，0.5cm3损伤组织用4%福尔马林固定，HE染色，光镜下观察损伤组织的细胞浸润情况，用免疫组化法检测受伤肌肉组织凋亡相关基因Caspase3表达情况；1mm3损伤组织用1%戊二醛一%多聚甲醛混合固定液(pH7.4 ) 4℃固定，电镜观察其细胞凋亡及细胞膜、线粒体等结构的变化；生化检测Na+，K+-ATPase活性，了解其组间的差别。

A statistics in world range indicates that the Sr/Eu ratios in the peraluminous granites show similar variation trend to those in pegmatitic apatites. This paper suggests that the high Sr/Eu ratio (＞300) in apatites or peraluminous granites is due to the strong partition of Eu〓 into the aqueous fluid, and this ratio can be used as an excellent geochemical indicator of fluid exsolution from magmatic melts.

对世界范围内的过铝质花岗岩统计表明，过铝质岩浆岩的全岩样品中的Sr/Eu也呈现二歧变化，由此本文提出Sr/Eu比值是指示过铝质岩浆体系中岩浆流体相出溶的有效地球化学参数，大于300的Sr/Eu比值是Eu〓强烈分配进入流体相的地球化学标志。

objective:to analyze the difference between mammary duct ectasiaand plasma cell mammitis.methods:the data of 24 cases of mde and 28 cases of pcm,including clinical manifestations,distinguished diagnoses,surgical therapy,pathological results,were analyzed.results:the clinical manifestations of mde are nipple discharge and breast mass,which should be distinguished with breast mass and early stage of breast cancer.the treatment is local resection.major pathological changes are duct ectasia and obvious periductal inflammatory changes.the clinical manifestations of pcm are breast mass and inflammatory changes,which should to be distinguished with advanced breast cancer and inflammatory breast cancer.the surgical treatment is extensive resection.the major pathological changes are inflammatory reaction and multiple abscesses in breast tissue.conclusion:mde and pcm are significant different,and they are different progressing stage of disease,thus the two diagnoses are independent.

目的：分析乳腺导管扩张症和浆细胞性乳腺炎临床上的差异。提出各自独立诊断的论据。方法：结合24例乳腺导管扩张症和28例浆细胞性乳腺炎对两病的临床症状、鉴别诊断、手术治疗、病理结果进行比较分析。结果：乳腺导管扩张症临床表现为乳头溢液和乳腺肿物，主要与乳腺肿物和早期乳腺癌鉴别诊断，手术以局部切除多见，病理表现为导管扩张及导管周围明显炎性改变。浆细胞性乳腺炎临床表现为乳腺肿物和炎性改变，主要与晚期乳腺癌和炎性乳腺癌鉴别诊断，手术切除的范围较大，病理变化以乳腺组织的炎性反应和多发性脓肿为主。结论：乳腺导管扩张症和浆细胞性乳腺炎有明显的差异，应作为这两种疾病独立诊断。

Objective To evaluate the influence of laser in situ keratomileusis on the macular retinal volume, peripapillary and perimacular retinal nerve fiber layer thickness assessed by optical coherence tomography preoperatively and 1 day postoperatively.

目的 利用OCT比较LASIK术前、术后早期黄斑区特定范围视网膜体积以及黄斑和视盘周围视神经纤维层厚度的变化。

Furthermore, a growing body of data supports an association between a lack of pharmacodynamic effect and ischemic events.

尽管在大范围的疾病状态有临床利益，噻吩并吡啶类药物—氯吡格雷药效学的影响在个体间变化很大。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。