单词	double aperture seal
释义	double aperture seal 孔密封
随便看	petro-chemical petro-dollars petrochemical petrodollar petrodollars petrol petrol blue petrol bomb petrol cap petrol station petrol tank petroleum petroleum jelly petroleum-based petrolhead petrology petticoat pettifogging petting petting zoo pettish petty petty bourgeois petty bourgeoisie petty cash 知来藏往，超凡入圣知止其所不知，至矣。知止则不殆，安闲更得宜。知止常止，终身不耻知止所以不殆。知止而后有定。知止而后有定，定而后能静，静而后能安，安而后能虑，虑而后能得知死不避，勇也。知死必勇。知法犯法，罪加一等知晓知根知底知母知法犯法知照知疼着热知白守黑知类知羞草知耻