理学 系 释 system 系 级别小于界，大于统的年代地层单位。
热学、统计物理学 统计物理学 system 系[统]
corollary 系†，推论；推论的 porism 系；推论；不定设题
数据库 数据库理论 释文 set 系
- lead-free soldering
- lead glass
- lead glazing
- lead grid
- lead grill
- lead/half-lead command line of sight guidance
- lead hydroxide
- lead ( II ) carbonate, basic
- lead-impression-block wiper trip
- lead-in
- lead inductance
- leading
- leading arm
- leading cadres of the accountability system
- Leading Climbing
- leading coefficient
- leading diagonal
- leading digit
- leading-digit phenomenon
- leading edge
- leading edge fillet
- leading-edge suction
- leading-edge vortex
- leading eigenvalue
- leading electrode