LF

1.Nurserymaid:The full-time employment housework-house cleaning,family cooking,taking care lf old people and babies 24hourse in house service.

老人、病人。无微不至的、丰富的护理经来帮助老人、病人的生活起居，让您放心。

2.VD and working procedure.Experiments showed that major of the LF step foreign inclusions are aluminium sesquioxide. spotted non-deforming inclusion and sulphuret.

VD及序现场取样.系统分析了各序中夹杂物的行为.特征.数量.变化历程及影响因素.实结果表明.

3.But in the couse of lathing and dawdling,the trouble of deformation,empyrosis and crack lf parts often appears which affects seriously the processing quality.

但在磨削过程中,易出现变形、烧伤及裂纹等问题,影响零件的加质量。

4.Objective: To evaluate the diagnostic efficacy of the bitewing radiograph(BWR),clinic examination(CE) and laser fluorescence examination (LF) for detection of initial posterior approximal caries .

体外评价比较平行投的牙合翼片(BWR)、激光荧光法(LF)和模拟临床检查(CE)等3种诊断方法对早期邻面龋的诊断水平。