beam pocket required的意思|示意

所需的束口袋 Irrevocable Letter of credit at sight » 不可撤销的即期信用证 beam pocket required » 所需的束口袋 following countriesis called "a western country" » 以下countriesis所谓“西方国家” ..

需要梁口袋 ... the evolution of temperature » 温度的演变 beam pocket required » 需要梁口袋 Who‘s that speaking ? » 该说是谁？ ...