四倍

The present invention can make osteoplast and hemopoietic stem cell well grow to result in cell proliferation of 23 times and 49 times separately in 10 days, and is suitable for large scale culture of cells.

本发明的效果和益处是可使成骨细胞及造血干细胞在此系统中良好生长，十天后细胞的扩增倍数分别可达到二十三倍和四十九倍，适合细胞的大规模培养。

The crystal structure of three eremophliane sesquiterpenes and one bisabolane sequiterpene with two epoxies from above two Ligularia species were determined by X-ray four circle differactomer technique and single crystal structure analysis, and their stereostructure was further confirmed.

利用X-射线四元单晶衍射技术和单晶结构分析方法，测定了两种橐吾属中三个艾里莫芬烷型倍半萜及一个双环氧没药烷型倍半萜的晶体结构，进一步确定了它们的立体构型。

Statistically, it is twice more probable to lose its files with two hard disks, three times more with three units, etc However, this mode is perfect to work with noncritical data such as games or video , the performance profit could reach 300% with four hard disks.

在统计学上，是它的两倍，更有可能失去其档案中有两个硬盘， 3倍以上三个单位等，但这种方式是十全十美的工作，非关键数据，如游戏或视频，业绩利润可达300 %与四硬盘。

Four keyboards were judged potential health hazards and the microbiologist recommended the removal of one keyboard as it had 150 times the pass limit of bacteria -- five times filthier than the swabbed toilet seat.

发现有四个键盘存在潜在的健康危害。这位微生物学家建议将其中一键盘清除因为它上面的细菌数超标150倍。这比清洗后的马桶座都要脏5倍。

Four keyboards were judged potential health hazards and the microbiologist recommended the removal of one keyboard as it had 150 times the pass limit of bacteria -- five times filthier than the swabbed toilet seat.

经检查测试呈现，其中有四个键盘对人体康健存在潜在威胁。有唯一键盘上的细菌数量超标150倍，比擦过的马桶座还要脏5倍，这位微生物学家提议将其从办公室搬走。

Four keyboards were judged potential health hazards and the microbiologist recommended the removal of one keyboard as it had 150 times the pass limit of bacteria -- five times filthier than the swabbed toilet seat.

经检测发现，其中有四个键盘对人体健康存在潜在威胁。有一个键盘上的细菌数量超标150倍，比擦过的马桶座还要脏5倍，这位微生物学家建议将其从办公室搬走。

When one element of an N-element array is aberrated, the most sensitive aberration is Piston error, and then the sensitive aberrations are element defocus, tilt, spherical aberration, coma and astigmatism. As for four aperture system, the influence of Piston error is 2 times larger than that of defocus, and 4 times larger than that of astigmatism.

在合成孔径成像系统单个子孔径存在像差的情况下，Piston误差对系统的影响最大，其次是离焦误差、倾斜误差、球差、彗差和像散，对于四孔径系统，Piston误差对系统的影响几乎是离焦误差的2倍，像散的4倍。

In this paper, we optimized the thickness of the doublers and triplers, mismatch angles and other parameters of Ⅰ/Ⅱ angle detuning and Ⅱ/Ⅱ polarization mismatch third harmonic generation schemes by numerical calculation way.

采用四阶龙格－库塔数值计算方法，以Ⅰ／Ⅱ角度失谐和Ⅱ／Ⅱ偏振失配两种三倍频方案为例，给出了入射基频光为平面方波，功率密度5GW／cm2的情况下，KDP晶体三倍频参数的优化结果。

Extract of total flavonoids was purified with macroeticular resins. Different kinds of resins were applied to inspect the static and dynamic adsorption ability,to optimize the concentration,volume and flow rate of eluant.

对葛根总黄酮的提取纯化工艺进行了研究，考察不同乙醇浓度，溶媒倍量，提取时间、提取次数和提取温度对总黄酮转移率和纯度的影响，建立了四因素三水平的正交试验，最终确立了最佳的提取工艺为：10倍量70%乙醇加热回流提取2次，每次2小时。

It's Alaska, the forty-ninth state of America, a land of endless icefields, sweeping 4tundra, 5fjords and 6volcanoes; twice the size of Texas, five times the size of Britain.

这是阿拉斯加，美国的第四十九个州。这里有一望无际的冰川、连绵的冻原、峡湾及火山，其面积是得克萨斯州的两倍、英国的五倍。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。