形态发生

Using bloodstain pattern analysis the student will learn to identify the occurrences that took place during and after a violent attack.

利用血溅形态分析，学员将会得到暴力袭击发生期间和之后发生的情况。

On the morphological differentiation,by inducing of fetal calf serum,it wasshown that the cytotrophoblast cells underwent aggregation first,and the adjacentcytoplasm membranes became tightly contacted through desomosomes andcytoskeleton.Then the adjacent cytoplasm membranes disintegrated fragmentallyto form fusion pore-like structure.Finally the multinuclear cells formed and inwhich the intercellular desmosomes disappeared.Immunocytochemical stainingfurther demonstrated that the formation of syncytium was through cell membranefusion rather than the amitosis process.

细胞形态分化的研究结果表明：早孕胎盘来源的细胞滋养层细胞在血清诱导下，首先发生聚集，并通过桥粒和细胞骨架使相邻的细胞膜紧密接触；之后细胞膜发生片段断裂，形成融合孔样结构；细胞间桥粒消失，最终形成多核的合体细胞；免疫细胞化学分析进一步证实合体化是通过细胞膜融合而非无丝分裂（amitosis即细胞核分裂而细胞质不分裂）实现的。

The results showed:(1) the cellule morphous and the disposition in chick embryo of PGCs were coincident no matter stained by PAS or HE staining, and HE staining could disclose the morphologic characteristics more clearly, exactly and completely;(2) genesis of blood island could be observed at the boundary of light and dark region of the extraembryonic blastoderm at about 26 hours;(3) both the blood vessel endothelium cells and free cells of the blood island were differentiated from PGCs. The generating of genuine yolk sac was at about 44-48 hours.

结果表明：①用经典的识别原生殖细胞的PAS染色方法与HE染色所观察到的PGC在鸡胚的分布及细胞形态基本一致，而HE染色较PAS法能更有助于清晰、完整、准确地识别PGC的细胞内部结构特征；②在孵化26小时的鸡胚胚外胚盘的明暗交界处可见血岛的发生，血岛发生的时间比真正的卵黄囊产生时间（大约44-48小时）要早很多；③血岛周围的血管内皮细胞与管腔中游离细胞都来自PGC。

Although the origin and mechanism of debris-flow can be clarified, by surveying and evaluating the characteristic indexes of debris-flow, such as cleugh configuration and geology condition, but in the forecast of debris-flow, it is also essential to adequately treasure and analyze the rainfall rate being a most important condition of extraneous cause.

勘测评估沟谷形态、地质条件等泥石流特征指标，可分析泥石流发生的成因与机理，在预测预报上，还应充分重视与分析泥石流发生时作为最重要外因条件的雨强。

The birds of Passeriformes are the group which are the largest number, the most species, the highest station of evolvement and the broadest adaptive radiation of existent aves. The traditional taxonomy were onlyaccording to morphologic and behavioral characters, however their morphologic and behavioral characters are so complicated that we could not differentiate some species easily. Therefore we had some taxonomic research by molecular means in order to supply traditional taxonomy.

雀形目是现存鸟类中种类最多、数量最大的、演化地位最高、适应辐射最广的类群，传统的分类方法仅依据形态和行为特征来划分，但由于该类群的形态及行为特征复杂使得部分种类不易区分，因此有必要依据分子手段研究其系统发生关系、以盼能对经典的分类方法给予补充。

The results indicated that the typical apoptosis was induced by PRRSV in lungs and uteri. The ultrastructural changes showed different characterizations at different stages of the infection. During the early stage from 8th h to day 3 postinfection,the apoptosis cells shrank,the cytoplasm concentrated,the chromatin condensed,the kernel disaggregated and the endoplasmic reticulum dilated. During the middle stage from day 5 to day 9 postinfection,the apoptosis cells evidently shrank,the cell membranes protu berated,the plastosome manifolded,and apoptosis bodies were found. During the last stage from day 10 upwards postinfection,the apoptosis bodies degenerated and disappeared,and no inflammation occurred. Few apoptosis cells were necrotic.

结果表明，PRRSV可诱导宿主肺和子宫发生典型的细胞凋亡，表现为细胞的超微形态结构随着病毒感染进程出现不同的特征性变化，早期（感染后第8 h至第3 d）凋亡细胞多表现为细胞体积缩小，细胞质密度增强，染色质浓缩，核仁解体，内质网扩张；中期（感染后第5 d至第9 d）凋亡细胞体积显著缩小，细胞膜突起，线粒体增多，有凋亡小体形成；晚期（感染后第10 d以后）凋亡细胞形态多表现为凋亡小体降解和消失，少数凋亡细胞在凋亡晚期表现为坏死细胞。

The experimental results show that: the failure mode of strengthened beam at elevated temperature can be classified as flexure failure mode or flexure-shear failure mode, and the failure mode of strengthened beam at high temperature may be different from that at room temperature; and although the load supported by the strengthened specimen is larger than that supported by the unstrengthened specimen, the fire resistance of the strengthened specimen is still larger than that of the unstrengthened specimen, due to the influence of fire insulation.

结果表明：高温下该类构件的破坏形态大致可分为受弯破坏和弯剪破坏两类，常温下发生弯曲破坏的加固构件有可能在高温下出现破坏形态的转变；虽然加固构件所承受的荷载明显大于未加固构件，前者由于防火涂料的保护，其耐火极限仍大于后者。

The present study examined its habits, morphology, pollen morphology including exine ultrastructure, floral organogenesis, and molecular phylogeny based on multiple regions of DNA sequences.

本文研究了该科植物的生活习性、外部形态、花粉形态和外壁超微结构以及花器官发生，并根据多个DNA区段的序列探讨了科的系统位置和属下关系。

Objective: The purpose of this investigation was to study the morphology and lip-teeth relationship in Angle's Class II malocclusion by cephalometrics, and to discuss the meaning of the functional state which was reflected by lip-teeth relationship.

目的：通过X线头影测量对安氏Ⅱ类1分类与2分类错的形态结构特征以及唇齿关系特点进行研究，探讨唇齿关系形态特征所反映的功能活动状态在错发生、发展过程中的意义。

Pening range breakout is effective after an inside day that has a smaller daily range than the previous four days (IDnr4 in Figure 1 ) and after any day that has a daily range less than the previous six days (NR7) whether an inside day or not.

RB这一现象发生在IDnr4或者NR7之后常常是有效的。IDnr4是指振幅小于前面4天的孕线形态。NR7是指振幅小于前面6天的形态。

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。