短语词组短语corrugated -sandwich boom 波纹状夹层梁corrugated core sandwich panel 波纹夹芯板corrugated sandwich boom 波纹状夹层梁corrugated sandwich web 波纹夹层腹板LASer -welded corrugated-CORe metallic sandwich panels 金属激光焊接夹层板 返回 corrugated sandwich