barycenter coordinate system

a-strut Aethoform airborne laser sounding Arkhangel'skaya Guba dextron EDPAF fantail grating four component quartz tube strainmeter infarcts IR isanomalous line quartzolite reapproaches self-boring type torsion shear apparatus servigrous taking the bull by the horns torsion levelling suspension vigils voluntary trade unionism zhai