中心体

One has the ability of photo-cleavage of DNA and another one as potential anti-cancer drug has the ability of oxidative cleavage of DNA. 1. As for the first system, a new ligand----Tpphz is used as the intercalator of the targeted compound. The 〓 is synthesized and characterized by elemental analysis,〓H NMR, molar conductivity, AgNO〓 titration, UV and fluorescence spectra.

核酸的光切割方面，我们选择了近年来新发现的一个配体Tpphz作为目标化合物的插入配体，合成了新颖的〓单核配合物，并通过元素分析、〓H NMR、摩尔电导测定、中心离子滴定法、紫外光谱和荧光光谱对此化合物进行了详细的表征。

The location of rockbody and orebody is controlled by the activity center of ore-bearing magma and ore pulp,among which the most critical controlling factor is the magma conduits connecting with the activity center of ore-bearing magma and ore pulp.

4岩体的定位受含矿岩浆、矿液活动中心的控制，而最关键的控制因素还是与岩浆、矿液活动中心相连接的岩浆通道的出口。

Enantiomer or solid-state form ratios (e.g., for racemates, and for defined admixtures of isomers or enantiomers or solid-state forms); solubility profile (aqueous and nonaqueous as applicable); partition coefficients; solution pH; dissociation constant; melting or boiling point; refractive index; specific gravity.

该要求可以通过提供下述信息来满足：名称（通用名、化学名、编码等）、化学摘要服务编码、性状描述（如：外观、颜色、物理状态）、分子式和分子重量、结构式、立体化学（找出手性中心、顺式反式异性等）、对映结构体比率（如：外消旋物、规定的异构体、对映异构物和固态形式的混合物）、溶解度概况、分配系数、溶液pH值、解离常数、熔点或沸点、折射率、比重。

Enantiomer or solid-state form ratios (e.g., for racemates, and for defined admixtures of isomers or enantiomers or solid-state forms); solubility profile (aqueous and nonaqueous as applicable); partition coefficients; solution pH; dissociation constant; melting or boiling point; refractie index; specific graity.

该要求可以通过提供下述信息来满足：名称（通用名、化学名、编码等）、化学摘要服务编码、性状描述（如：外观、颜色、物理状态）、分子式和分子重量、结构式、立体化学（找出手性中心、顺式反式异性等）、对映结构体比率（如：外消旋物、规定的异构体、对映异构物和固态形式的混合物）、溶解度概况、分配系数、溶液pH值、解离常数、熔点或沸点、折射率、比重。

This paper summarizes pluton growing pattern and formation process into central, biacentrol, lateral, irregular and multi-central growth. The volume accretion may be explicated by the growing curves.

岩体的生长方式、形成过程可概括为中心式、偏心式、侧向式、不规则式、中心多点式，生长量特点可以用生长曲线表述。

In order to identify the proteins which are responsible for the better fruit set in heat-tolerant variety than in heat-sensitive one, we used two dimensional electrophoresis systems to separate isolated proteins from developing anther and looked for the proteins up-/down-regulated in heat-tolerant variety. In doing so, two selected cultivars, CL5915, the heat-tolerant, and L4783, the heat-sensitive, were grown at the same time in a phytotron at both 30/25℃ and 25/20℃. The proteins isolated from developing anthers of heat-tolerant variety grown in 30/25℃, were subtracted to remove the common genetic background.

因此为了鉴定出在高温逆境下与番茄著果率提升有关之蛋白质体，我们利用亚蔬中心所提供耐热番茄(Solanum lycopersicum， formerly Lycopersicon esculentum)品系CL5915与不耐热品系L4783，藉由控制二品系间生长温度之差异（热逆境30/25℃与一般生长环境25/20℃），在雄蕊发育早期利用蛋白质体学技术分析可溶性蛋白质，比较并扣除共有之遗传背景之蛋白质后，将二品系间具有差异的可溶性蛋白质筛选出来，并进一步利用LC-ESI MS/MS进行蛋白质身份鉴定。

They have the characteristics of light weight, small size, vibration-proof and reliable contact, are widely used to connect with RF coaxial cables in the smallest of instruments as well as personal communication equipments.

技术特点：环境：温度范围：-4090c电气特性：工作电压：170v频率范围：0-打造介质耐压： 500v机械特性体：黄铜金/镍plaed以男性为中心的接触：磷青铜，镀金女中心联系人：铍铜，镀金绝缘体：聚四氟乙烯crimpferrules：铜合金，镀金或镀镍

【tumbler cup, cup, Beibi and bottom of the cup cylindrical arc connected, characterized by: the bottom of the cup body of the Ministry for the thickening of the circular arc bottom, cup light body within the space under the heavy weight concentrated in the bottom of the center ...

不倒翁杯，杯口、杯壁和杯底呈圆弧形连接，其特征是：杯体底部为加厚的圆弧底部，杯体上轻下重内空，重量集中于底部中心。。。。

Therefore a GD sand-screening pipe is developed, which is helpful to the environment protection. This new sand-screening pipe consists of center pipe, sand filter and guide shoe. The center pipe is machined from 64mm tubing, and the sand filter is made from silica sand, cement, additive.

这种环保型滤砂管由中心管、滤砂器及引鞋组成，中心管采用 6 4mm油管加工而成，两端为特种 6 4mm平式油管螺纹，管体上每米均匀分布 72个直径 10mm孔眼；滤砂器是根据不同技术标准筛选不同粒度的石英砂、油井水泥、添加剂和水按配比加工压制的。

The application of the survey model in the survey tests on a shield machine manufactured by Herrenknecht A.G.

盾构机姿态控制点测量首先要建立测量模型，即采用导线测量和三角高程测量方法，通过对盾构机刀头和中体圆柱体外直径精密测量，拟合计算出盾构机刀头和中体中心三维坐标，建立盾构机坐标系统，解算姿态控制点在盾构机坐标系统内的三维坐标，进而由姿态控制点计算盾构机的姿态。

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。