查询词典 f ratio

It was found that for large aperture ratios (the ratio of focal length of the primary to its aperture, as the f-ratio in modern cameras for instance), f/10 or more, the difference between spherical and paraboloidal mirrors was negligible in the performance of the telescope.

结果发现，大口径的比例（比例焦距初级到其孔径，由于架F -比率在现代相机举例来说）， f/10或更长时间，之间的差别球面和抛物面反射镜是微不足道的，在表现望远镜。

Alternatively, one could reduce the F-ratio and employ highly corrected apochromatic objective lenses, which again were expensive.

另一选择是，可减少F-ratio并使用高消色差物镜，又使得价格升高。

Furthermore, in the entrance section, again, ratio d/l and ratio h/f are between 10% and 60%.

此外，在入口部分，比例d／|和比例h／f还处于10％和60％之间。

The F ratio is assumed to be unchanged when using multiple antenna elements.

假定 F 比率在使用全向天线元素时是不变的，这种假定基于系统中智能天线的全面部署这一事实。

For the mathematically inclinded, the sweet spot's diameter is proportional to the cube of the f/ratio.

从数学计算看，甜点的直径与f/焦比的立方成正比。

In lingual orthodontics, the applying of intrusion force was less useful than the well control of the M/F ratio to control the torque of upper incisors. If the crown of the incisor had been inclined lingually, it would be very difficult to recover the torque.

3舌侧正畸中，首要的是控制好M/F值，否则即使加大垂直压低力也难以抵抗冠唇向转矩的不足；而且一旦产生舌倾趋势，将比唇侧正畸更难以恢复。

In the 30 patients of diabetes mellitus without neuropathy,there were 8 patients with prolonged duration of F wave,4 prolonged minimum latency of F wave,2 increased ratio of the area of F/M.

有神经病变的 DM患者 76例， F波最短潜伏期均延长； F/M波波幅和 F/M波面积增大； F波时限在轻型 DPN患者中增宽，在重型 DPN患者中未见明显异常。

Results The minimum latency prolonged and ratio of amplitude of F/M and the ratio of the area of F/M significantly increased in the patients with DPN,the duration of F wave prolonged in the mild DPN but revealed normal in the severe ones.

结果无神经病变的 DM患者 30例， F波时限增宽 8例， F波最短潜伏期延长 4例， F/M波面积增大 2例。

In the active stressed lap polishing technology, a special computer controled pilishing machine and a 450mm diameter active stressed lap have beeen developed, and in the experiment a paraboloidal mirror with F ratio 2 and diameter 910mm has been successfully polished.

主动抛光盘磨制技术研制了应用主动抛光盘的计算机控制的磨镜机，研制了一块直径450mm的主动抛光盘，并试验磨制了一块φ910毫米的F/2抛物面镜。

On CHE programming, the higher coupling ratio of control-gate makes the higher electrical field across TOX in Si than Ge. Also because of the continuity of displacement vector, the higher permittivity of Ge would cause the lower electrical field at interface. We get the higher gate current in Si than Ge. On CFN programming, the higher CT in Ge would show the higher electrical field across TOX. However, the parameters of F-N tunneling are calculated and showing the gate current in Si is larger than Ge. On the same mechanism of F-N tunneling erasing, the parameters also show the higher electrical filed of Si would cause the higher erasing speed. The continuity of displacement vector also explains the higher electrical field at interface for F-N tunneling programming/erasing.

从通道热电子穿隧写入的模拟结果发现，由於控制闸极耦合电容的影响，加上电位移向量在半导体-氧化层界面连续的观念，拥有较高介电常数的锗反而得到较小的等效电场，决定了穿隧电流反倒是不如矽基板；在F-N穿隧写入的模拟中，即便锗基板拥有较大的总耦合电容，使得在浮闸的耦合电压大於矽基板，但仍旧是半导体-氧化层界面的电场扮演了穿隧电流的决定性因素，得到的结果仍旧是矽基板的写入速度高於锗基板；在F-N抹除的模拟中，运用与F-N写入相同的数学模型，仍旧看见在锗基板上未能得到速度上的改善，同时用数学的计算展示了合理的解释。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。