... 视在半峰值时间virtual time to half-value 视在波前时间Virtual front time 视在原点virtual origin ...
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There is not direct mathematical relations among virtual front time, virtual tail time and theoretical front time, theoretical tail time of lightning impulse.
雷电波的视在波头时间和视在波尾时间与理论波头时间和理论波尾时间没有直接的数学关系。
On the PC front, we've seen concept laptops with two displays for some time now, usually with the idea that the bottom screen can be used as a virtual keyboard when needed.
在个人电脑领域,如今可见装有两个显示器的手提电脑,通常其底部屏幕在必要的时候可以作为虚拟键盘使用。
In addition, the crew had to undergo the time-consuming process of shooting actors in front of a green screen and subsequently meshing their actions seamlessly into the 3d virtual worlds.
此外,船员不得不接受的射击在绿色屏幕前演员,后来啮合无缝三维虚拟世界的行动耗时的过程。
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