等比

The matrix effect was corrected by theoretical a influence coefficient method. Moreover, flux dilution rate and fusion time were discussed. The mass ratio of sample to flux was chosen as 1 to 15. The fusion time of sample closen was 15 min. The concentration of the sample in the flux was proved to be suitable for the XRF determination of both components of macro and micro amount.

对稀释比、熔样时间等进行了探讨，结果表明，试样和熔剂的质量比以1：15、熔样时间以15 min为好，所得试样在熔剂中的分散度适当，可同时适合试样中高、低含量组分的测定。

This instrument can meter the electric level, frequency spectrum, carry to noise ratio , A/V , cobbly ratio , voltage s of the AC trunk line and the battery.

该场强仪可以对有线电视系统的电平、频谱、载噪比、A／V比、系统不平度、交流干线和电池电压等进行测量，并通过液晶显示，结果保存于EPROM中。

The explanation for this is that ethylene oligomerized in the Ni catalyst active site and the oligomers containing vinyl end group served as comonomers to in situ copolymerize with the growing polyethylene chain in the active site of titanium catalyst.

催化剂的摩尔比、Al/摩尔比和聚合温度等聚合条件对催化活性及聚合物的结构与性能有明显影响。

In this article, we have been investigated that synthesizing and properties of shape memory polyurethane. The shape memory polyurethane was synthesized from PCL diol, MDI(4, 4'-diphenylmethane diisocyanate) and BDO (1,4-butanediol) in this experiment. We analyzed that the effect of differential mole ratio of monomers to synthesized SMPU. Besides, the various concentrations of Nano-silver were mixed with SMPU. Mechanical properties and shape memory behavior of SMPU nanocomposite films were investigated.

本研究目的为藉由改变4，4'-二苯甲基二异氰酸盐(4，4'-diphenylmethane diisocyanate， MDI)/聚己内酯二元醇(polycaprolactone diol， PCL diol)/1，4-丁二醇(1，4-butanediol， BDO)等不同莫耳比制备形状记忆型聚氨基甲酸酯(Shape Memory Polyurethane， SMPU)；并探讨改变不同单体莫耳比及添加不同浓度奈米银溶液对其物性及形状记忆性的影响。

When analyzing wrinkling and fracture, it is found that the results of the simulation have a better consistency with the results of simulation using real drawhead than using equivalent drawbead of Dynaform. Furthermore, compared with simulation using real drawbead, simulation using equivalent drawbead spends less time on both computation and modeling.

在模拟软件Dynaform中，将建立的拉延筋阻力计算模型作为等效拉延筋使用，模拟分析了表盘座某部件的成形，在分析起皱、破裂等成形问题时，比使用Dynaform自带等效拉延筋更接近使用真实拉延筋模拟的结果，而且，比使用真实拉延筋模拟节省了计算时间及建模时间。

In this paper, the magnetic properties and crystal structure of the PtCo alloys around the equiatomic composition have been studied.

中文摘要：系统研究了等原子比附近不同Pt、Co原子比的PtCo合金的磁性能和晶体结构。

A new microwave heating extraction method replacing the conventional circumfluence is described, the flavonoids in flammulated coat onion samples has been determined with the use of spectrophotometry.

利用微波加热溶出代替常规回流提取方法，对红皮洋葱样品中黄酮类化合物进行了微波溶出—分光光度法测定，与常规方法做了对照，并讨论了微波功率、微波时间、浸提剂浓度、料液比等因素对溶出结果的影响，通过正交试验，确定了最佳工艺条件为：微波功率900W，微波提取时间5min，提取溶剂80%乙醇，料液比为1∶10。

Based on the forementioned conclusion this paper provide a fresh air control strategy, which can be used in Xian city and can satisfy needs of both fresh air distribution and energy saving.

论文还讨论了新风分配的改善问题，发现南向单独分区在不增加系统能耗的情况下对新风分配有一定改善作用；征对VAV空调系统各种常用的新风控制方式：固定新风量、固定新风比和变新风比等，通过试算模拟了其可保证新风分配时的能耗情况。

Using hydrochloric acid as a cheap catalyst,perfume methyl furoate was synthesized from methanol and furoic acid prepared from furfural,and was characterized by GC,IR and 1H-NMR.

从糠醛出发，由制备的糠酸和甲醇反应，在盐酸催化下，合成了香料糠酸甲酯，并用IR、1HNMR、GC等进行了表征；探讨了包括高纯度糠酸的制备在内的反应影响因素，在醇酸物质的量之比为 5∶1、催化剂体积占甲醇体积 13.0 %、反应时间 3h的最佳工艺条件下，酯化收率为81 0 %，收率比硫酸法、某些固体超强酸法

The accuracy of this equation to calculate the thermodynamic properties such as pvT, saturated liquid density, isochoric heat capacity, speed of sound, second virial coe...

比较了HFC－32的热力学性质，包括：压力－比容－温度、比定容热容、声速、第二维里系数、饱和液密度等的测量值与本状态方程计算值。

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。