您要查找的是不是：
- P-T界线 P-T boundary
- K／T界线 K/T boundary
- P／T界线 Permian/Triassic boundary
- E/K界线 E/K boundary
- 这两种意见界线分明。 There are no indecisive boundaries between the two opinions.
- 高k High-k
- K肥 K fertilizer
- （k k
- 这两个邻居在住房界线问题上剧烈争吵。 The two neighbors disagreed bitterly about their boundary line.
- k/n k-out-of-n
- K泡 potassium bubble
- 标明界线 to designate boundaries
- K镜 K mirror
- 各级保护区应当有明确的地理界线。 Protection zones of all grades shall be indicated by clear geographic demarcations.
- K相 K phase
- 打破界线 to break down barriers
- K-B K-B
- K=1 K=1
- 他们站在界线外看比赛。 They watched the match from the sidelines.
- K-L Karhunen-Loeve
