等比

The phase, particle shapes, particle size and specific surface area of the doped ceria powders were characterized by XRD, TEM and BET.

利用XRD、TEM和BET等现代物理测试方法对氧化铈纳米粉体的物相、颗粒度、分散性、颗粒形貌和比表面积等性能进行了表征，650℃焙烧的粉体呈现出良好的结晶状态，为立方萤石结构，粉体的比表面积在56.134－27.354

The main component of ramie glial was pectin, hemicellulose and lignin; The single factor on degumming of ramie test was respectively analyzed with a high vigorous of pectinase KDN and TZ-888 compound enzyme （mainly xylanase and mannanase on the pH value, bath ratio, dosage of enzyme, metal ions, temperature and time.The orthogonal test of L9（34 were done by bath ratio, dosage of enzyme, temperature and time. The results showed that the best compages of KDN pectinase on degumming was 1∶12 of bath ratio,pH 8.6,1 mmol/L Mg2+,300 IU/g of KDN pectinase,35℃、6 h;the best compages of TZ-888 compound enzyme on degumming was 1∶18 of bath ratio,pH 4.0,1 mmol/L Ca2+, 500 IU/g of TZ-888 compound enzyme,45 ℃,6 h.

摘 要：本研究根据苎麻胶质的主要成分为果胶、半纤维素和木质素，用高活性的KDN果胶酶和TZ-888复合酶（主要是木聚糖酶和甘露聚糖酶）从pH值、浴比、酶用量、金属离子、温度、脱胶时间等方面进行单因素试验，然后选取影响显著的浴比、酶用量、温度，时间进行四因素三水平的脱胶试验，结果表明鲜麻采用KDN果胶酶脱胶最佳组合为浴比1：18，pH 8.6， 1 mmoL/L Mg2+，酶用量300 IU/g，温度35 ℃、时间6 h时处理，TZ-888复合酶脱胶最佳组为浴比1：12，pH 4.0， 1 mmoL/L Ca2+，酶用量500 IU/g，温度45 ℃，时间6 h进行脱胶为优化的试验条件。

The main component of ramie glial was pectin, hemicellulose and lignin; The single factor on degumming of ramie test was respectively analyzed with a high vigorous of pectinase KDN and TZ-888 compound enzyme （mainly xylanase and mannanase on the pH value, bath ratio, dosage of enzyme, metal ions, temperature and time.The orthogonal test of L9（34 were done by bath ratio, dosage of enzyme, temperature and time. The results showed that the best compages of KDN pectinase on dry ramie degumming was 1∶12 of bath ratio,pH 8.6,1 mmol/L Mg2+,20 IU/g of KDN pectinase,4℃、4h;the best compages of TZ-888 compound enzyme on degumming was 1∶18 of bath ratio,pH 4.0,1 mmol/L Ca2+, 300 IU/g of TZ-888 compound enzyme,40 ℃,5 h.

摘 要：本研究根据苎麻胶质的主要成分为果胶、半纤维素和木质素，用高活性的KDN果胶酶和TZ-888复合酶（主要是木聚糖酶和甘露聚糖酶）从pH值、浴比、酶用量、金属离子、温度、脱胶时间等方面进行单因素试验，然后选取影响显著的浴比、酶用量、温度，时间进行四因素三水平的脱胶试验，结果表明干苎麻采用KDN果胶酶脱胶最佳组合为浴比1：12，pH 8.6， 1 mmoL/L Mg2+，酶用量200 IU/g，温度45 ℃、时间4 h时处理，TZ-888复合酶脱胶最佳组为浴比1：18，pH 4.0， 1 mmoL/L Ca2+，酶用量300 IU/g，温度40 ℃，时间5h进行脱胶为优化的试验条件。

To compare the image quality of the three sequences in two groups by One-Way ANOVA and T Test. The qualitative assessment standards include clarity, artifacts, signal uniformity, the conspicuity of enhanced vein and the observable grade of intrahepatic venous branchs. The quantitative assessment standards include SNR and CNR of intrahepatic portal vein and hepatic veins. Furthermore, the anatomy and variations of the intrahepatic portal vein and hepatic veins are statistical analysed.

通过方差分析和T检验分别对A、B组三个序列的图像质量进行比较，评定标准包括清晰度、伪影、信号均匀性、静脉强化程度及肝内静脉分支显示级数等定性指标和肝内门静脉、肝静脉的SNR(Signal-Noise Ratio，信噪比)及CNR(Contrast-Noise Ratio，对比度噪声比)等定量指标。

According to Crenshaw et al.[1], wide tourniquet cuffs are more effective at lower inflation pressures than are narrow ones. Pedowitz et al.[2] demonstrated that curved tourniquets on conical extremities require significantly lower arterial occlusion pressures than straight tourniquets Fig.

根据Crenshaw[1]等人的研究，充气压力较低时宽的止血带比窄的止血带更为有效：Pedowitz[2]等人证实采用弧形止血带对圆锥形的肢体部分加压时，使动脉闭塞所需的压力比使用直止血带(长方形，straight tourniquet)显著降低(图1—1)。

According to Crenshaw et al.[1], wide tourniquet cuffs are more effectie at lower inflation pressures than are narrow ones. Pedowitz et al.[2] demonstrated that cured tourniquets on conical extremities require significantly lower arterial occlusion pressures than straight tourniquets Fig.

根据Crenshaw[1]等人的研究，充气压力较低时宽的止血带比窄的止血带更为有效：Pedowitz[2]等人证实采用弧形止血带对圆锥形的肢体部分加压时，使动脉闭塞所需的压力比使用直止血带(长方形，straight tourniquet)显著降低(图1—1)。

Consisting of the high strength-low density fibers and matrix, the fibrous composite has many excellent properties or special characteristics, for example, high specific strength and high specific modulus, anisotropic and designable. In recent years, it has been widely used in the structures of aircraft, space, marine and automobile, etc.

纤维增强复合材料是由高强度、低密度的纤维材料与基体组成，具有很多其它材料和结构不具有的优点或特点，如比强度和比模量很高，具有强烈的各向异性和可设计性等，广泛应用于航空、航天、造船和汽车等领域。

According to the equation of shrunk interface pressure and the condition of diametrical ratio based on the theory of equal strength , it is found that the diametrical ratio does not conform to the condition of diametrical ratio, and the distribution of stress is very non-uniform.

根据等强度理论所确定的缩套圆筒的界面压力公式及径比条件，对某超高压缸的径比及应力进行了分析计算，发现其径比不符合径比条件，应力分布也很不均匀。

We used BET,FT-IR,XRD,TPR techniques to investigate the compression strength, the BET and the pore structure of catalysts by changing some factors such as the glutinousness and concentration of adhesive ,the ageing time and temperature and so on.

为解决催化剂侧压强度的不足，我们在实验室进行了超细镍基负载型催化剂实验室小试成型工艺条件研究，用硅溶胶及Ni~(2+)-硅溶胶两种不同的胶粘剂进行挤条成型，通过BET、FT-IR、XRD、TPR等技术考察了催化剂在成型过程中，胶粘剂的浓度、粘度，湿／干粉比，催化剂老化时间，以及焙烧温度等因素对催化剂的强度以及催化剂的比表面积和孔结构的影响。

The Si/Al ratio of NaY molecular sieve was determined by an empirical formula of lattice constant obtained by extension function method of X-ray diffraction and framework Si/Al ratio of NaY molecular sieve determined by solid nuclear magnetic resonant spectrum method.

前言晶胞参数是决定晶体结构的重要参数之一，Na Y超稳分子筛属立方晶系，由于 Na Y超稳分子筛骨架硅铝比受许多条件的影响，如投料比、晶化温度、晶化压力和晶化时间等。通过研究发现分子筛骨架的硅铝比与其晶胞参数相关，而分子筛的硅铝比可作为合成分子筛产品质量的控制指标 [1] 。

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。