Compressional wave
[电] 压缩波
🧩 词语组成解析
a. 有压缩性的；与压缩有关的
wave
[wev]
n. 波浪，波动;挥手;涌现的人（或事物）;汹涌的行动（或思想）态势;
vi. 摇摆，起伏;
vt.& vi. （一端固定地）飘扬;挥手指引;挥动…示意;略呈波形;
vt. 挥手表示;挥舞;使…略呈波形;烫（发）;
🗣️ 情景例句
Sounds like.
声音像……
Exactly.
完全正确。
Libraries made education possible, and education in its turn added to libraries: the growth of knowledge followed a kind of compound interest law, which was greatly enhanced by the invention of printing.
藏书使教育成为可能，而教育反过来又丰富了藏书，因为知识的增长遵循着一种“滚雪球”的规律。印刷术的发明又大大提高了知识增长的速度。