banker’s long draft  银行长期汇票

long draft spinning  大牵伸经纺法

long system  长学制

optical communication system， long-haul terrestrial & local interoffice  长途干线/局

Optical Communication System，Long-haul Terrestrial & Local Interoffice  长途干线/局间中继光通讯系统

DICOM Long long a way  漫漫长路中文走近

air draft system  通风系统

apron high draft system  皮圈式大牵伸装置

boiler draft system  锅炉通风系统

Draft System  通风系统; 牵伸系统

high draft system  大牵伸装置

induced draft system  引风系统

natural draft system  自然通风除尘

ordinary draft system  普通牵伸装置

V type draft system  依纳V型牵伸

System System Software  系统软件

positive list system system  肯定列表制度

inter-backup system for central control system and district-level dispatch system  集控与地调互备系统

Single school system; Single track system; Unitary school system  单轨制