区域时间

Effects of sonic factors, including dosage of catalyst, calcination temperature of catalyst, nitrated reaction time and recovered catalyst, on the selectivity of toluene in mononitration at the presence of silicotungstic acid catalyst were studied by gas chromatography.

通过气相色谱研究了诸如催化剂用量、催化剂焙烧温度、硝化反应时间、硝化反应温度及催化剂的重复使用等因素对甲苯硝酸硝化区域选择性的影响。

In order to investigate the quantitative structure-retention relationship in gas chromatography, the molecular structure of monosubstituted alkane RX (X=halogen, OH, SH, NH2) is divided into two parts, R and X, to obtain molecular structure parameters, and the retention times in GC for 37 monosubstituted alkanes RX were determined.

将单取代烷烃RX(X=卤素，OH，SH，NH2等)分子结构分为两个区域来提取分子结构参数，从三方面影响因素(烷基R、取代基X、R与X的相互作用)来定量关联RX的气相色谱保留时间。

The study of the spectrum of ore deposits in the belt demonstrates that the regional mineralization is temporally characterized by polycycling, inheritance, neoformation and superimposition. The Variscan, late Indosinian to Yanshanian epochs are favorable periods to form large and giant ore deposits.

对区域优势矿种的成矿谱系研究表明，本区成矿在时间演化上表现出明显多旋回性、继承性、新生性和叠加性特征，华力西期与印支末－燕山期是成矿大爆发期，最有利于大型超大矿床形成；在空间分布上，具有明显的侧向和垂向分带性。

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 results reveal that:a Pentadactyl vapor transportation in East-Asia change with the appearing , strengthening , weakening , and disappearing of the South China Sea monsoon, the Indian monsoon, subtropical high etc..b Southerly vapor transportation of each longitude areas in East-Asia have different characters in appearance time , speed to north , the place of north bound , speed to south , etc..

主要得出以下结论：(1)东亚地区各候各区域水汽输送的变化，伴随着南海季风、印度季风、副高等天气事件或系统的发生、加强、减弱和消失。(2)各个经度带的偏南风水汽输送在出现时间、北抬进程速度、北界位置、南撤速度等方面均体现了不同的特征；西太平洋副高边缘的东南风水汽输送具有迂回西扩和快速东撤的特点，并且在强盛期能够影响到我国西北地区。

There are low density lesions seen at the both side internal capsules, basal Extracranial soft tissue swelling at the right side periorbital, frontal and temporal regions.

有低密度病变见於两侧内部的胶囊，基颅外软组织肿胀，右侧眶，额和时间区域。

For patients unfit for long revision procedures, and when the cement mantle is well preserved, especially in the peritrochanteric region, cement-in-cement revision to a longer stem, following adequate preparation of the old mantle to promote bonding between new and old cement, is possible.9 Unpublished data and personal communication with the Hip Unit of the Royal Devon and Exeter Hospital have provided us with encouraging results in this group of patients.

由于患者不适宜进行时间较长的翻修手术，当其骨水泥壳套得以完整保存的时候，尤其是在粗隆周围区域，对老的壳套进行足够的准备工作，以促进新老骨水泥之间的结合后，进行更长柄的骨水泥对骨水泥翻修也是可能的[9] 。从英国得文暨艾克斯特皇家医院髋关节科提供给我们的一些未发表的数据和个人的信息来看，这一组患者有着令人鼓舞的结果。

For patients unfit for long reision procedures, and when the cement mantle is well presered, especially in the peritrochanteric region, cement-in-cement reision to a longer stem, following adequate preparation of the old mantle to promote bonding between new and old cement, is possible.9 Unpublished data and personal communication with the Hip Unit of the Royal Deon and Exeter Hospital hae proided us with encouraging results in this group of patients.

由于患者不适宜进行时间较长的翻修手术，当其骨水泥壳套得以完整保存的时候，尤其是在粗隆周围区域，对老的壳套进行足够的准备工作，以促进新老骨水泥之间的结合后，进行更长柄的骨水泥对骨水泥翻修也是可能的[9] 。从英国得文暨艾克斯特皇家医院髋关节科提供给我们的一些未发表的数据和个人的信息来看，这一组患者有着令人鼓舞的结果。

In order to assort with antinomy of computation cost and computation precision in ordinary Monte Carlo methods,multi-Monte Carlo method is promoted to simulate general dynamics equation for deposition of polydisperse particles.

为了解决普通Monte Carlo算法计算精度和计算代价无法协调的矛盾，发展了一种新的多重Monte Carlo算法求解考虑多分散性颗粒沉积的通用动力学方程，该算法引入加权虚拟颗粒的概念，基于时间驱动MonteCarlo技术，模拟过程中保持虚拟颗粒数目和计算区域体积不变。

Under scanning electron microscopy, along with the extension of the culture time, the chondrocytes grew and propagated well on the surface. On 3 weeks, the cells adhered to the surface, and extended the pseudopodia, by which the cells were connected each other. The cells secreted matrix, which deposited around the cells and the surface of meniscus. In some area, the cells formed the structure like cartilage lacuna.

扫描电镜观察，随着培养时间延长，细胞在材料表面生长良好，细胞密度增加。3周时，可见细胞黏附在材料表面，有伪足伸出，细胞间通过伪足相互连接，并可见细胞分泌的大量基质沉积于细胞周围和材料表面，部分区域形成类似于软骨陷窝样结构。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷