系

通讯系统

tōng xùn xì tǒng

communication system

连系

lián xì

to link

连系词

lián xì cí

copula (linguistics)

周期系

zhōu qī xì

periodic system

道系

dào xì

(slang, coined c. 2017, contrasted with 佛系[fo2 xi4]) Dao-type, a type of person who has traits associated with a Daoist approach to life, such as being active, optimistic, earthy and forthright

递推关系

dì tuī guān xì

(math.) recurrence relation

边缘系统

biān yuán xì tǒng

limbic system

医学系

yī xué xì

medical school

金融系统

jīn róng xì tǒng

financial system

银河系

yín hé xì

the galaxy (our galaxy)

销售时点情报系统

xiāo shòu shí diǎn qíng bào xì tǒng

point of sale system

锕系元素

ā xì yuán sù

actinoids (rare earth series), namely: actinium Ac89 錒|锕[a1], thorium Th90 釷|钍[tu3], protoactinium Pa91 鏷|镤[pu2], uranium U92 鈾|铀[you2], neptunium Ne93 鎿|镎[na2], plutonium Pu94 鈈|钚[bu4], americium Am95 鎇|镅[mei2], curium Cm96 鋦|锔[ju2], berkelium Bk97 錇|锫[pei2], californium Cf98 鐦|锎[kai1], einsteinium Es99 鎄|锿[ai1], fermium Fm100 鐨|镄[fei4], mendelevium Md101 鍆|钔[men2], nobelium No102 鍩|锘[nuo4], lawrencium Lr103 鐒|铹[lao2]