Low -incidence areas  低流行区

high and low incidence populations  高低发人群

high-low-low temperature  中低低

high-low-low temperature process  中低低

LLWL (low-low water level)  低低水位

low-incidence area  贲门癌低发区

low-incidence area LIA  低发区

Low-low satellite to satellite tracking mode  低低跟踪模式

Low-Low Satellite-to-Satellite Tracking  低低卫卫跟踪

low-low water level switch  低-低水位开关

mean low low water  平均特低水位; 平均较低低潮位

Medium-Low-Low Temperature  中－低－低; 中低低

mid low low temperature shift  中、低、低变换

mid low low temperature shift process  NHD溶剂; 中低低变换工艺

middle low low temperature” shift process  中低低变换工艺

middle-low-low shift process  中低低变换工艺

middle-low-low temperature shift  中低低

mid-low-low temperature shift process  中低低变换工艺

pressurized medium-low-low shift process  加压中—低—低工艺