Definition of hard lead in English:

hard lead

noun

A lead alloy containing a small amount of antimony (which makes it harder than pure lead).

Late 17th century; earliest use found in John Pettus (c1613–1685), natural philosopher and politician. Originally after German †hart Bley.

noun

A lead alloy containing a small amount of antimony (which makes it harder than pure lead).

Late 17th century; earliest use found in John Pettus (c1613–1685), natural philosopher and politician. Originally after German † hart Bley.

单词	hard lead
释义	Definition of hard lead in English: hard lead noun A lead alloy containing a small amount of antimony (which makes it harder than pure lead). Origin Late 17th century; earliest use found in John Pettus (c1613–1685), natural philosopher and politician. Originally after German †hart Bley. Definition of hard lead in US English: hard lead noun A lead alloy containing a small amount of antimony (which makes it harder than pure lead). Origin Late 17th century; earliest use found in John Pettus (c1613–1685), natural philosopher and politician. Originally after German † hart Bley.
随便看	lactase lactases lactate lactated lactation lactation lactational lactational lactational lactation consultant lacteal lacteals lacteals lactescence lactescence lactescency lactescent lactic lactic acid lactiferous lactivism lactivist lacto- lactobacilli lactobacillus