Usage of the character 線

(of sb who ostensibly collaborated with the Japanese during the Sino-Japanese war of 1937-1945) to secretly work for the Nationalists or against the Communists

guòqiáomǐxiàn

过桥米线

[過橋米線]

rice noodle soup from Yunnan province

bǐngzhǒngshèxiàn

丙种射线

[丙種射線]

gamma ray

yǐnxiànchuānzhēn

引线穿针

[引線穿針]

to thread a needle
(fig.) to act as a go-between

tuìjū'èrxiàn

退居二线

[退居二線]

to withdraw to the second line of duty
to resign from a leading post (and assume an advisory post)

zhēnxiànhuójì

针线活计

[針線活計]

needlework
sewing

yǒuxiàndiànshì

有线电视

[有線電視]

cable television

xiànxìngfāngchéng

线性方程

[線性方程]

linear equation (math.)

báixiànbānwén

白线斑蚊

[白線斑蚊]

Aedes albopictus (species of mosquito)

wúxiànwǎnglù

无线网路

[無線網路]

wireless network

zhōngjiānlùxiàn

中间路线

[中間路線]

middle road (in politics)

yīxiànwēiguāng

一线微光

[一線微光]

gleam

tíxiànmù'ǒu

提线木偶

[提線木偶]

marionette

píngmiànqūxiàn

平面曲线

[平面曲線]

(math.) plane curve

gǎnyìngxiànquān

感应线圈

[感應線圈]

induction coil
solenoid

xīnlǐfángxiàn

心理防线

[心理防線]

psychological barrier

yìmiànzhíxiàn

异面直线

[異面直線]

(math.) skew lines

guǎnyuánxiànchóng

管圆线虫

[管圓線蟲]

"eel worm", a parasitic worm carrying meningitis

dàishùqūxiàn

代数曲线

[代數曲線]

algebraic curve

chuānzhēnyǐnxiàn

穿针引线

[穿針引線]

lit. to thread a needle (idiom); fig. to act as a go-between

yīxiànzhīgé

一线之隔

[一線之隔]

a fine line
a fine distinction

nèixiànjiāoyì

内线交易

[內線交易]

insider trading (illegal share-dealing)

jiāmǎshèxiàn

伽玛射线

[伽瑪射線]

gamma ray (loanword)

ànxiànguāngpǔ

暗线光谱

[暗線光譜]

dark-line spectrum

Běihuíguīxiàn

北回归线

[北回歸線]

Tropic of Cancer

zhēnxiànbólí

针线箔篱

[針線箔籬]

wicker sewing basket (dialect)

Luóshìxiànquān

罗氏线圈

[羅氏線圈]

Rogowski coil

shànggāngshàngxiàn

上纲上线

[上綱上線]

to make a mountain out of a molehill

jiǎopíngfēnxiàn

角平分线

[角平分線]

angle bisector

diànhuàxiànlù

电话线路

[電話線路]

telephone line

lúnqínshèxiàn

伦琴射线

[倫琴射線]

X-ray
Röntgen or Roentgen ray

zhèngquèlùxiàn

正确路线

[正確路線]

correct line (i.e. the party line)

zōnghébùxiàn

综合布线

[綜合布線]

integrated wiring

jūnxiànzhǐbiāo

均线指标

[均線指標]

moving average index (used in financial analysis)

xiànxìnghuíguī

线性回归

[線性回歸]

linear regression (statistics)

zǐwàixiànguāng

紫外线光

[紫外線光]

ultraviolet light

Měiguó Zàixiàn

美国在线

[美國在線]

America Online (AOL)

tōngxìnxiànlù

通信线路

[通信線路]

communication line

wēibōtiānxiàn

微波天线

[微波天線]

microwave antenna

duōxiànrǎnsètǐ

多线染色体

[多線染色體]

polytene chromosome

zhíxiànjiāsùqì

直线加速器

[直線加速器]

linear accelerator

cèdìxiànqūlü

测地线曲率

[測地線曲率]

geodesic curvature

rénxínghéngdàoxiàn

人行横道线

[人行橫道線]

crosswalk
pedestrian crossing with zebra stripes

jiāochāyīnyǐngxiàn

交叉阴影线

[交叉陰影線]

hatched lines
cross-hatched graphic pattern

yīnjíshèxiànguǎn

阴极射线管

[陰極射線管]

cathode ray tube

Qígéfēi Fángxiàn

齐格菲防线

[齊格菲防線]

Siegfried Line, line of German military defenses during WWI and WWII

àikèsīshèxiàn

爱克斯射线

[愛克斯射線]

X-ray radiation

yídòngpíngjūnxiàn

移动平均线

[移動平均線]

moving average (in financial analysis)

fēixiànxìngguāngxué

非线性光学

[非線性光學]

nonlinear optics (physics)

Shíjì Kòngzhìxiàn

实际控制线

[實際控制線]

Line of Actual Control (LAC), separating Indian-controlled territory from Chinese-controlled territory

Qīng Zàng Tiělùxiàn

青藏铁路线

[青藏鐵路線]

Qinghai-Tibet Railway

wúxiàndiànguǎngbō

无线电广播

[無線電廣播]

radio broadcast

běnchūzǐwǔxiàn

本初子午线

[本初子午線]

the first meridian
the prime meridian

shuāngqūxiànzhèngxián

双曲线正弦

[雙曲線正弦]

hyperbolic sine or sinh (math.)

Yǒuxiàn Xīnwén Wǎng

有线新闻网

[有線新聞網]

Cable Network News (CNN)

sānshíbādùxiàn

三十八度线

[三十八度線]

38th parallel
dividing line agreed at Yalta between US and Soviet zones of influence in Korea, now the DMZ between North and South Korea

Jǐncòu Miǎozǐ Xiànquān

紧凑渺子线圈

[緊湊渺子線圈]

Compact Muon Solenoid (CMS)

fàngchángxiàndiàodàyú

放长线钓大鱼

[放長線釣大魚]

use a long line to catch a big fish (idiom); a long-term plan for major returns

wúxiàndiànjiēshōujī

无线电接收机

[無線電接收機]

receiver (radio)

tōngyòngchuànxíngzǒngxiàn

通用串行总线

[通用串行總線]

Universal Serial Bus, USB (computer)

zhíxiànxìngjiāsùqì

直线性加速器

[直線性加速器]

linear accelerator

zìdòngshèxiànshèyǐng

自动射线摄影

[自動射線攝影]

autoradiography

wúxiàndiànshōufājī

无线电收发机

[無線電收發機]

transceiver
radio frequency receiver, broadcaster or relay

zhōngzǐshèxiànshèyǐng

中子射线摄影

[中子射線攝影]

neutron radiography

shùzìyònghùxiànlù

数字用户线路

[數字用戶線路]

digital subscriber line (DSL)

Tǒngyī Zhànxiàn Gōngzuòbù

统一战线工作部

[統一戰線工作部]

United Front Work Department of CCP Central Committee (UFWD)

jìnjùlíwúxiàntōngxùn

近距离无线通讯

[近距離無線通訊]

(computing) near-field communication (NFC)

Měiguó Yǒuxiàn Xīnwén Wǎng

美国有线新闻网

[美國有線新聞網]

Cable Network News (CNN)

hóngwàixiàndǎoyǐnfēidàn

红外线导引飞弹

[紅外線導引飛彈]

infrared guided missile

chángliúshuǐ,bùduànxiàn

长流水，不断线

[長流水，不斷線]

continuous and patient effort (idiom)

yídòngpíngjūnxiànzhǐbiāo

移动平均线指标

[移動平均線指標]

moving average index (used in financial analysis)

guójìrìqībiàngēngxiàn

国际日期变更线

[國際日期變更線]

international date line

wúxiàndiànguǎnlǐwěiyuánhuì

无线电管理委员会

[無線電管理委員會]

Wireless transmission regulatory commission

fēiduìchènshìshùjùyònghùxiàn

非对称式数据用户线

[非對稱式數據用戶線]

Asymmetrical Digital Subscriber Line
ADSL

Sāngdìnuò Mínzú Jiěfàng Zhènxiàn

桑地诺民族解放阵线

[桑地諾民族解放陣線]

Sandinista National Liberation Front

Gélínnízhìběnchūzǐwǔxiàn

格林尼治本初子午线

[格林尼治本初子午線]

the Greenwich meridian

Jiěfàng Bālèsītǎn Rénmín Zhènxiàn

解放巴勒斯坦人民阵线

[解放巴勒斯坦人民陣線]

Popular Front for the Liberation of Palestine

dānsībùchéngxiàn,dúmùbùchénglín

单丝不成线，独木不成林

[單絲不成線，獨木不成林]

(idiom) one strand does not make a thread, one tree does not make a forest

Zhōngguówúxiàndiànpínpǔguǎnlǐhéjiāncè

中国无线电频谱管理和监测

[中國無線電頻譜管理和監測]

China state radio regulation committee SRRC