单词	劲挺
释义	劲挺jìngtǐngstrong劲挺参见：劲拔[jìngbá]
随便看	direction c. direction change relay direction character direction coefficient direction comparison protection system direction component direction control direction control circuit direction control valve direction cosine direction cosines direction coupler direction coupler， grin-rod lens direction course direction, crystal direction detector direction detector; direction finder {= df}; finder direction detector; direction finder ; finder direction distribution direction drilling directioned direction effect direction equation direction field direction filtering