您要查找的是不是：
- P／T界线 Permian/Triassic boundary
- P-T界线 P-T boundary
- K／T界线 K/T boundary
- 这两种意见界线分明。 There are no indecisive boundaries between the two opinions.
- "pin"中"p"的送气发音 the aspiration of "p" in "pin"
- 他在文件上签上姓名的首字母G.P.S。 He initialed the paper G.P.S.
- p-n 结 p-n junction
- 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.
- P phosphorus (P)
- 标明界线 to designate boundaries
- P圈 P-cycle
- 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.
- P型 p-type
- 打破界线 to break down barriers
- P光 p-component
- P群 p-group
- 他们站在界线外看比赛。 They watched the match from the sidelines.
- P肥 K fertilizer
- N/P N/P
- P态 P state
