Although tachyons have never been seen in earth-based laboratories, mathematically they can exist .
尽管在地面的实验室中，从来没有发现过超光子，但从数学上说，它是可能存在的。
I will admit that tachyons remain hypothetical, but then so do black holes, and who really doubts their existence anymore?
我承认，超光子一直停留于假定，但是黑洞从前也是假定的，但是现在谁还真的怀疑它的存在？
This essay gives a discussion of various models of tachyons, pointing out the difficulties the corresponding theories have met with.
本文对超光速粒子的各种模型作了讨论，指出其中存在的无法克服的困难。
It then reviews the vaious experiments of tachyons searching during mauy years up till now which gave the negative results, and explains some astronomical observat…
其次，本文简述了近十几年来探索超光速粒子的实验，对某些肯定超光速粒子存在的实验作了评述，并指出所有这些实验均给出否定的结果。
It then reviews the vaious experiments of tachyons searching during mauy years up till now which gave the negative results, and explains some astronomical observations w…
其次，本文简述了近十几年来探索超光速粒子的实验，对某些肯定超光速粒子存在的实验作了评述，并指出所有这些实验均给出否定的结果。
It then reviews the vaious experiments of tachyons searching during mauy years up till now which gave the negative results, and explains some astronomical observations w…
其次，本文简述了近十几年来探索超光速粒子的实验，对某些肯定超光速粒子存在的实验作了评述，并指出所有这些实验均给出否定的结果。
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