钢筋混凝土桩突码头
reinforced concrete piled jetty
汕头LPG码头工程
Shantou LPG Wharf Project
《国际海上油轮和油码头安全指南》
International Guidance to Safety of Tanker and Oil Terminal
《国际油轮及其码头安全指南》
International Oil Tankers and Terminals Safety Guide
1/4波长折叠指形谐振器
quarter-wavelength interdigital-like resonator
8字形指向传声器
figure-of-eight microphone