admittance
/ədˈmɪtəns/noun
mass noun
1
- the process or fact of entering or being allowed to enter a place or institution（允许）进入：
people were unable to gain admittance to the hall.
人们无法获准进入礼堂。
2
- Physics a measure of electrical conduction, numerically equal to the reciprocal of the impedance【物理】导纳。