所有科技知识-科学参考

科学参考收录了103327条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。

principal directions	principal distance	principal E plane	principal focus	principal function
principal homomorphism	principal H plane	principal ideal	principal ideal ring	principal item
principal line	principal lobe	principal meridian	principal mode	principal moments
principal normal	principal normal section	principal part	principal plane	principal plane of stress
principal point	principal quantum number	principal radii	principal radii of normal curvature	principal ray
principal root	principal section	principal series	principal strain	principal stress
principal value	principal vertical circle	principal visual ray	principle	principle of coincidence
principle of covariance	principle of duality	principle of dynamical similarity	principle of equivalence	principle of inaccessibility
principle of insufficient reason	principle of least action	principle of optimality	principle of reciprocity	principle of superposition
principle of the maximum	principle of the minimum	principle of uniformity	principle of virtual work	print
printability gage	print driver	printed circuit	printed circuit board	printed-wiring armature
printer	printer file	printer's point	print film	print hammer
sheet crack	sheet deposit	sheet drift	sheeted fissure	sheeted vein
sheeted zone	sheet erosion	sheet-fed press	sheet feeder	sheet film
sheetflood	sheetflood erosion	sheet flow	sheet forming	sheet frost
sheet glass	sheet grating	sheet ice	sheeting	sheeting caps
sheeting plane	sheeting structure	sheet joint	sheet lightning	sheet line
sheet metal	sheet-metal gage	sheet-metal screw	sheet mica	sheet mineral
sheet piling	sheet plastic	sheet polarizer	sheet rubber	sheet sand
sheet sandstone	sheet separation	sheet silicate	sheet spar	sheet steel
sheet structure	sheet train	sheetwash	sheffer stroke	Sheffield plate
Shelby tube	shelf	shelf angle	shelf break	shelf channel
shelf edge	shelf facies	shelf ice	shelf life	shelf sea
shelfstone	shell	shellac	shellac varnish	shellac wax
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