Noun:

1. the capability or quality of shrinking or contracting, especially by muscle fibers and even some other forms of living matter

contractin异肾上腺素contractn.合同；婚约；合约；契约v.缩小；订合同；缩短；感染（疾病）；招致Contracture scar挛缩瘢痕contract-based基于契约contract issuing发包contract payable约定应付款contract laborer包身工contract by deed契据； 契据形式的合同Contract meaning意思联络contract English合同英语contract annuity[法] 年金契约contract society契约社会

1. Their effect on cardiac contractility has not been assessed directly.
   它们对心肌收缩性的作用未被直接评价过。
2. Macromolecule materials are added into urea-formaldehyde-resin todecrease its brittleness and contractility, and increase its water-resistance.
   在脲醛树酯中加入其它高分子材料，降低其脆性和收缩性，提高其耐水性。