中心体

After the river channel shifted, the discharging center of pressure was generated from the seabed erosion, on which the diapir came into being.

黄河口摆动后，海底快速冲刷，在最大冲刷中心也是最大压力释放中心刺穿体形成，随着海洋侵蚀速率减缓，刺穿作用将逐渐减弱，最终将被冲刷消亡。

In section 5, separation of di-peptides with two chiral centers using cyclodextrin modified micellar electrokinetic chromatography was investigated.

论文的第五章采用环糊精修饰的胶束电动色谱手性拆分了具有两个手性中心的二肽对映体，并应用于模拟人血清样品中这些二肽对映体的分析。

L the normal zonning in order of greisen type tin deposit 〓tourmalite type tin deposit 〓 cassiterite quartz type tin deposit 〓cassiterite sulfide tin deposit copper-lead-zinc 〓 sulfide deposit 〓lead-zinc sulfide deposit 〓antimony deposit, which may be related to the high-level em placement of the intrusions;2 the reversed zoning in order of lead-zinc deposit 〓copper-lead-zinc deposit 〓tin polymetallic deposit, which may be result from the descending of heat centre of the intrusions with their cold and solidification.

该成矿系列的矿床在空间上有序分带，即以岩体为中心的顺向分带为：云英岩型锡矿床〓电英岩型锡矿床〓锡石石英型锡矿床〓锡石硫化物型锡矿床〓铜铅锌金属硫化物矿床〓铅锌硫化物矿床〓锑矿床，逆向分带为：锡多金属矿床〓铜铅锌硫化物矿床〓铅锌硫化物矿床，造成这种分带现象的内在因素是高热能且富含矿热液的黑云母花岗岩的高侵定位和岩体热中心的向下移动。

The structures and stabilities of the ground-states for Cu13-nAgn clusters have been studied by Gupta model potential based on tight binding second moment approximation in combination with a genetic algorithm. It is found that the lowest energy structures of the pure clusters (n=0,13) are perfect icosahedron, and the structures for the bimetallic clusters (n=1～10) have stable structure which are slightly deformed with respect to the perfect icosahedron, The Cu atom prefers to occupy the center of the clusters with higher coordination numbers.

在混合团簇基态结构优化的遗传算法方案中增加了交换算子，结合Gupta紧束缚模型势研究了Cu13-nAgn团簇的最低能量结构，选择合适的交换和杂交概率，可有效地提高优化效率，优化结果表明，Cu13和Ag13是全对称的二十面体，n=1～10的混合团簇能形成稳定结构，其构型是在二十面体基础上发生畸变，Cu原子趋于处在团簇中心，随着Ag原子数目的增加，原子间的平均距离单调增加，团簇的结合能单调减小，Cu2Ag12和CuAg12只存在亚稳结构。

Results In the medium and high dose F0 groups, it was observed that the atrophy and incrassation of seminiferous tubule, decrease of spermatogenesis, hyperplasia of interstitial tissue, especially in high dose groups spermatozoon abnormality and nucleolus concentration in the rats testis after DU ingestion for 14 months. The changes became more severe with the prolongation of DU ingestion. Such changes occurred in filial rats (F1) after DC ingestion for 5 months. In the medium and high dose F0 groups, it was observed that a little atrophy of kidney glomerulus, hyperplasia of interstitial tissue after DC ingestion for 14 months, and kidney glomerulus fibrosis happened after DC ingestion for 20 months, such changes occurred in filial rats (F1) after DC ingestion for 5 months In the medium and high dose F0 groups, splenic germinal center and periarterial lymphatic sheaths were hyperplasia , companies with lymphopoiesis after DC ingestion for 7 months, splenic white pulp became more small and sparse after DC ingestion for 20 months.

结果 F0代的中、高剂量组大鼠摄入贫铀14个月后可见雄性的精曲小管萎缩，管壁增厚呈空虚网状，生精细胞层次减少，间质细胞增生，但仍见有精子生成；高剂量组可见到精子呈异型性改变，细胞核浓缩深染，且随着摄入时间延长改变愈趋明显；F1代大鼠摄入贫铀5个月后就有上述改变且更为严重。F0代中、高剂量组大鼠摄入贫铀14个月后肾小球轻度萎缩，间质增生明显，20个月时肾小球萎缩纤维化；F1代大鼠摄入贫铀5个月后就有上述改变。F0代中、高剂量组摄入贫铀7个月时脾脏生发中心和淋巴鞘增生，淋巴母细胞增生活跃，20个月时脾小体减少，生发中心稀疏；F1代大鼠摄入贫铀早期和晚期有类似改变。F0和F1代高剂量组摄入贫铀早期肝脏有炎症细胞浸润，晚期骨髓有核细胞减少，脂肪细胞增加。

The MoI is aided by Vietnam's Center for Internet Security, which also produces antivirus software.

资讯部受到越南资讯安全中心的帮助，该中心也制造防毒软体。

The doping profile within the body and at least a portion of source and drain regions is symmetric about a centerplane of the body region parallel to the main surface of the device.

体区中以及至少一部分源极和漏极区中的掺杂分布关于平行于器件主表面的体区的中心面对称。

We have 7 CNC Machine center with three axes,2 bridge Machine center with pentahedral and all kinds of processing equipment.

公司配备有7台三轴CNC加工中心、2台五面体龙门加工中心和各类机加工设备。

In 2003, we succeeded in manufacturing 30 types of K series program-controlled paper cutting machines by using the most advanced techniques in the world. Furthermore, in 2006, the computer-controlled, high-speed, high-accuracy paper cutting machine K-CD series was listed in the National Torch Project. GUOWANG's strategy had led the company to gain more than 10 years of continuous sales increase. In April 2009, we imported 7 sets of CNC pentahedron machining center which lead GUOWANG to be the leading manufacturer of Chinese paper cutting machine industry that owns the largest scale, most complete and advanced machining centers.

从2003年采用国际最先进切纸机生产技术实现生产K系列30种型号程控切纸机到2006年K-CD型电脑程控高精度高速全开切纸机被列入国家火炬项目，我们一直朝这一目标看齐、迈进。2009年4月份我公司又引进了7台进口CNC五面体加工中心生产设备，成为目前全国切纸机行业当中拥有加工中心最齐全，最庞大，最先进的生产商。

There are strong to weak schistosity from rim to centre in all the dikes. The chemical compositions of the dikes are similar to that of the basalts.

无论哪种产状的脉体都发育片理化现象，且从脉体的边缘向中心减弱。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。