The heart is surrounded by a double - layered , sac - like structure called the pericardium.

心脏被一种叫做心包的 双层 、 囊样结构所包绕.

互联网

Situated on the right side of major peak of Mount Qingyun, it is crescent - shaped and double - layered.

位于 青云 山主峰右侧, 呈 半 月型,由上下两层构成.

互联网

Output decay by thermal relaxation in perpendicular double - layered media is studied by numerical calculation and experiments.

通过实验以及定量计算探讨了垂直二层膜介质由热磁衰减引起的输出信号衰减现象.

互联网

Pericardium -- A double - layered membranous sac surrounding the heart and major blood vessels connected to it.

心包膜 — 包住心脏和连接心脏的主血管的 双层 膜囊.

互联网

The oscillation of an air - filled double - layered spherical shell immersed in water was examined.

研究了浸没于水中的 双层 球壳振动问题.

互联网