无变化的

In ancient funeral service and burial, the role of "teacher"was in the embarrassing situation,"teacher"had not funeral service and burial, and this did not change from Confucian times to HanTang, but because of "teacher" special political and cultural status, they had funeral service and burial from public college to private education in HanTang period.

在古代丧葬礼仪中，"师"的角色是较为尴尬的，在孔子时代即"师"无丧礼的状况直至汉唐并无根本的变化，但由于"师"的特殊政治、文化地位，汉唐时期由官学到私学均存在着心丧、私谥的礼仪活动。

Defines a d imensionless initial height of a heat source to reflect the effect of a heat source on heat distribution regularity of an air conditioned room with upward displacement, using variance analysis method obtains the dimensionless relationship between the heat distribution resularlty and other factors as Arn, Zr,ZJ and DIHHS, and reveals their importance in desoendins ceder as Arn, Zr, DIHHS and Zj.

提出了用热射流起始无因次高度来反映热源起始高度对下送风空调房间热分布系数α的影响，利用回归原理得出了α随阿基米德数Ar_n、热射流自由度Zr、机械射流自由度Zj及热射流起始无固次高度变化的准则关系式。用连结向量图法和对实验数据回归公式的F检验，对影响室内热分布规律的各个因素进行了分析，发现这些因素均为主要影响因素，其影响的相对主次依次为Ar_n，Zr，和Zj，回归结果具有很强的显著性。

Especially, the cross correlation analysis was applied to estimate the influence of monthly rainfall days on PM10 monthly average concentration.

分析结果表明：厦门市PMl0浓度年内变化无明显的上升和下降的趋势，但有显著的周期性，分别为3、7和29天，气候因素对PM10浓度的变化有显著的影响。

From 24h to 96h, the removal rates of NH4 -N in every experimental group were all negative indicated that when being exposure to Hg2 , Egeria najas not only couldnt remove NH4 -N from water, but also would increase its concentration.

在24-96h的处理时间内，各实验组中细叶蜈蚣草对NH_4~-N的去除率基本为负数，说明在Hg~(2 )的作用下，细叶蜈蚣草不仅不能去处水中的NH_4~-N，相反还可能使水中的NH_4~-N增加。96h内水体NO_3~--N含量变化无明显的规律性，而细叶蜈蚣草对水体NO_3~--N的去除率变化规律比较一致，先上升后下降最后比较平稳。

A gas,such as steam in the cylinder of asteam engine,has neither deftnite shape nor definite volume-it changes its sshape and also its svolume with change in the shape andvolume of the container.

气体，例如蒸汽机汽缸中的水蒸气，既无一定的形状，也无一定的体积。气体的形状和体积是随着容器的形状和体积的改变而变化的。

A gas,such as steam in the cylinder of asteam engine,has neither deftnite shape nor definite volume-it changes its hape and also its svolume with change in the shape and volume of the container.

气体，例如蒸汽机汽缸中的水蒸气，既无一定的形状，也无一定的体积。气体的形状和体积是随着容器的形状和体积的改变而变化的。

A gas,such as steam in the cylinder of asteam engine,has neither deftnite shape nor definite volume-it changes its sshape and also its svolume with change in the shape and volume of the container.

气体，例如蒸汽机汽缸中的水蒸气，既无一定的形状，也无一定的体积。气体的形状和体积是随着容器的形状和体积的改变而变化的。

Objective:to study the epidemiologic characteristic of mortality of malignant tumors in zhongshan city.method:selecting the investigated datum of mortality of malignant tumor in zhongshan city as sample uses sas statistics software to analyse and forecast the mortality by time series.results:morlality of male malignant tumor and both male and female malignant tumour showed the risen trend from 1970 to 1989.the trend will be kept in future.both will be separately risen to 121.05/105 and 83.92/105 in 2 000.mortality of female malignant tumour will be kept in about 43.59/105 in 2000.couclusion:mortality of both male and female malignant tumor takes on the trend of diffirent change.the male showed risen trend;the female showed the fluctuation of non-trend random.rising mortality of malignant tumor greatly threaden the crowd health.

目的：研究中山市恶性肿瘤死亡率的流行学特点，为制定防治计划提供依据。方法：以中山市恶性肿瘤死亡率调查资料为样本，应用sas统计分析软件对恶性肿瘤死亡率进行时间序列分析与预测。结果：1970～1989年男性恶性肿瘤死亡率和男女合计恶性肿瘤死亡率均呈现上升趋势且有继续保持的趋势。到2000年将分别上升为121.05/10万和83.92/10万左右；女性恶性肿瘤死亡率呈现无趋势的随机波动且将继续保持下去，到2000年保持在43.59/10万左右。结论：中山市男女恶性肿瘤死亡率呈不同变化趋势，男性恶性肿瘤死亡率呈现上升的趋势，女性恶性肿瘤死亡率呈现无趋势的随机波动。恶性肿瘤死亡率的上升对人群的健康构成重大威胁。

It is nothing else than impurities prenatally inherent in ore that seriously affect the quality of the latter, which is formed as a result of geological vicissitudes including diastrophic movement, eruption of volcano, sedimentation, glaciation and weathering etc., under the action of which pyrogenic rocks, volcanic complex, aqueous rocks, sedimentary rocks etc., come into being, some of which exist in a stage of symbiosis, the main cause of the absence of pure rocks in nature, wherein lies the reason for the need of separation technology and apparatus, namely, ore-dressing devices and equipment, so far impotent to meet the requirements of metallurgical industry the scientists make every endeavor to elevate to a new high by laser separation.

没有什么比矿石形成之前就存在的杂质对矿石品质的影响更为重大。矿石是火成岩、火山群、水成岩、沉积岩等成形时，在包括地壳运动、火山爆发、沉积、冰蚀、风化等地质变化的作用下而形成的。而有些地质变化在一个发展阶段中存在共生现象。自然界无杂质岩石缺乏的主要原因在于需要分离技术和设备来完成，即：需要选矿设备和装置。而迄今为止，这些设备还难以适应冶金业的需要，虽然科学家们尽一切努力用激光分离技术将冶金业提高到一个新的高度。

Pentaphyllum s influence on the activity of Glutathione peroxidase and Catalase in the skin of hireless photoageing mice as well as the content of hydrogen peroxide (H_2O_2) in their skin, and to investigate G.

目的：研究绞股蓝提取液对紫外线照射引起的无毛小鼠皮肤光老化模型皮肤组织谷胱甘肽过氧化物酶、过氧化氢酶的活性、过氧化氢(H_2O_2)含量，以及无毛小鼠真皮结构变化的影响，判断内服绞股蓝提取液对皮肤光老化的作用。

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