粒

Some techniques which are used for the measurement of grinding temperatures,such as infrared radiation pyrometers,optical fiber infrared radiation pyrometer, two-color infrared system and infrared imaging system,are summarized,compared and discussed.

磨削过程中，大量无规则离散分布在砂轮表面的磨粒对工件划擦、耕犁和切削综合作用，其所产生的热体现为工件的温升、砂轮与工件接触面的温升、工件已磨削表层的温升、磨粒切削刃温度和切屑温度。

The BDDcFⅧ gene was ligated behind PUB and 20H1 promotors to create lentiviral vectors pTK161 and pTK162. Meantime lentiviral vectors pTK161' and pTK162' were produced by cloning a green fluorescent protein into pTK151 and pTK152, which was driven by PUB and 2OH1 promotors respectively. Vector supernatant were prepared by using transfer calcium phosphate mediated-cotransfection of 293T cells. The virus vector,△NRF packaging-plasmid, and VSV-G envelope-plasmid was assayed by titers and cFⅧ activity in cell culture supernatant after infection into 293T cells.

用构建携带cFⅧ基因的慢病毒载体pTK161和pTK162（含20HI启动子），同时构建含绿色荧光蛋白的慢病毒载体pTK161'和pTK162'（含2OH1启动子）的方法，分别与包装质粒△NRF、包膜蛋白质粒VSV-G共转染293T包装细胞，将包装好的病毒颗粒再感染293T细胞，检测病毒滴度和培养细胞上清中cFⅧ活性。

Results Six probands (8%) had heterozygous mutations in hTERT or hTR; mutant telomerase resulted in short telomeres.

结果：6 位先证者(8%)的hTERT或hTR存在杂合突变；端粒酶突变后以短端粒的形式存在。

Under such conditions non-tacky pourable mean PCR244 could be prepared and yield of particles with size below 0.9mm was 99wt% and above.

在此条件下，可获得不自粘、流动性良好，粒径小于0.9mm产物的成粉率在99wt%以上，粒径均一的PCR244。

And non-tacky pourable mean PCR244 could be prepared and yield of particles with size below 0.9mm was 98. 6wt% and above.

在此玻璃化温度范围内，可获得不自粘、流动性良好，粒径小于0.9mm产物的成粉率在98.6wt%以上，粒径均一的PCR244。

This paper studied the modification effects of granulated polymer-PR PLAST on asphalt mixtures by a large number of laboratory tests using different contents of the polymer. It is pointed that the rutting-resistance of mixture under high temperature is enhanced with the polymer contents and the Dynamic Stability is increased by 3 times on 0.5% polymer contents.

通过大量的室内试验分析，研究了粒化聚合物PR PLAST对沥青混合料性能的改善作用，通过对不同掺量的粒化聚合物沥青混合料的性能试验，发现掺量增加时，沥青混合料的高温抗车辙能力也随之提高，在掺量为0.5%时动稳定度提高约3倍；沥青混合料的水稳性也有一定程度的提高，低温抗裂性有少量改善。

MAIN OUTCOME MEASURES: Identification of the recombinant plasmids and the expressing mRNA and protein in 293-T cells.

主要观察指标：质粒的酶切鉴定及重组质粒在293-T细胞中mRNA及蛋白水平的表达。

In addition, the stability of plasmids in 11 representative strains during culture was examed.

此外，本研究还考察了11个不同质粒型菌株的质粒在培养条件下的稳定性。

To produce large quantities of plasmid, an efficient large-scale purification process needs to be developed.

由于目前市场上对质粒的需求量很大，因此有必要开发大规模的质粒制备技术。

The surface planishing and 1mm diameter (where the soil sample passing through 1mm standard griddle) are idealer process and appropriate diameter selection for measurement indoor, because they have lesser standard error vector of testing direction and average reflectance in repeated measurements for soil with different texture.

表面压平处理方法及1mm粒径条件下，不同质地的土壤总体上都能获得具有相对较小的测试方向上的标准差向量及多次重复测试反射系数平均值之间的标准差向量，是室内测试较理想的表面处理方法和合适的土壤粒径选择。

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。