。
This bow has strong tension.
Literal
This bow [topic-は] tension [subject-が] strong [copula-です].
弓 'bow' (weapon). 張り literally means 'tension, stretch' — here the physical tautness of the bowstring on a 弓道 (kyudo, traditional Japanese archery) bow. The same word stretches metaphorically to 'spirit, vigor, alertness' (張りのある声 'a strong, lively voice'; 張りのある生活 'a life with purpose'), so this concrete physical sense is a useful anchor before encountering the figurative ones.