温度性收缩的

We find good ways to hydrolyze and modify by experiments. Through the experiment, good tanning, retanning and filling properties, as well as, better chrome exhaustion are found in the modified products, with the help of selecting suitable ways to hydrolyze and modify the chrome shavings. The crust leather is possessed of fullness, softness, good dyestuff...

通过实验研究，选择适宜的水解铬革屑的方法和改性条件，发现改性产品在应用中具有较好的鞣制复鞣填充作用，可促进对铬的吸收，坯革丰满、柔软、有弹性，粒纹清晰细致；对染料吸收性好、着色均匀；并可提高成革的收缩温度，降低废液中的含铬量

The indexes (including the appearance, dimension, density, thermal conductivity, temperature for shrinkage under hot load and so on) in this standard are identical with the Japan standard, but those the Japan standard doesn't have (for instance, the pipe shell eccentricity, water content, shot content, incombustibility and so on) are added.

本标准中外观、尺寸、密度、导热系数、热荷重收缩温度等指标与日本标准等同，增列了日本标准所没有的管壳偏心度、含水率、渣球含量、不燃性等指标。

The importance of studying shrinking of polystyrene pattern for evaporative pattern casting is pointed out in this paper.After studying effects of technological factorsexpandable polystyrene(EPSbead diameter,pre-expansion time,age time of pre-expansion bead,molding steam pressure,storage time and temperature of pattern on shrinking of pattern,it is shown that the stress relaxation of pattern and the escape of pentane and water in pattern are main cause of pattern shrinking.

指出了对消失模铸造用聚苯乙烯模样收缩展开研究的必要性，研究了可发性聚苯乙烯珠粒粒径、预发泡时间、预发泡珠粒熟化时间、成形蒸汽压力及模样的放置时间、贮存温度对模样收缩的影响，认为模样中发泡剂和水分的挥发以及应力的释放是引起模样收缩的主要原因，最后提出了在实际生产中为减少模样收缩应采取的措施。

In order to overcome the shortcomings of acellular dermal matrix used as tissue engineering scaffold material, such as bad permeability, low degradation speed, and strong immunogenicity, a new type of collagen scaffold was prepared by applying various chemical, biological and physical comprehensive methods to deal with pigskin. The microstructure of the scaffold was observed under photomicroscope and scanning electron microscopy, and the in vitro degradation time, permeability, tensile-strength, porosity, shrinkage temperature were tested.

为了克服猪脱细胞真皮基质作为组织工程支架材料渗透性差、降解速度过慢、免疫原性较强等缺点，采用多种化学、生物与物理综合方法处理猪皮制备了一种新型天然胶原支架材料，通过光学显微镜、扫描电镜观察以及体外降解时间、透水汽性、拉伸强度、孔隙率、收缩温度等的测定，对其性能进行了研究。

The microstructure of the scaffold was observed under photomicroscope and scanning electron microscopy,and the in vitro degradation time,permeability,tensile-strength,porosity,shrinka...

实验结果显示：支架中的成纤维细胞、脂肪细胞及组织纤维间质完全去除，胶原纤维得到了松散，并维持其原有的天然三维网络多孔结构；该材料透水汽性处于3000g.m-2.d-1左右，适合创面恢复；体外降解时间处于25～50h之间，并可根据需要调整工艺条件控制降解时间；拉伸强度介于10.20～11.50MPa之间，具有良好的拉伸强度；收缩温度介于70～85℃之间。上述结果表明该材料已解决了猪脱细胞真皮基质渗透性差、降解速度过慢的缺点，并且其透气性和拉伸强度高、降解性优良且可控，符合组织工程支架材料的要求。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。