painless

adj.

无痛的，不引起痛苦的；无并发症的；

1. The scan is safe, quick and painless.
   扫描过程是安全、快速和无痛的。
2. The most common presenting symptom is a painless mass.
   主要的临床症状为无痛性肿瘤。
3. Walking is an easy, painless and powerful form of exercise.
   走路是一种简单、不痛苦又有效的运动。

Painless nonorthogonal expansions
Painless unsupervised learning with features
painless , a Drosophila Gene Essential for Nociception
Differential expression of cytokines in painful and painless neuropathies.
Impairment of myocardial perfusion and function during painless myocardial ischemia.
Autonomic neuropathy and painless myocardial infarction in diabetic patients. Histologic evidence of their relationship
Cervical magnetic stimulation: a new painless method for bilateral phrenic nerve stimulation in conscious humans.
Differences in peripheral and autonomic nerve function measurements in painful and painless neuropathy. A clinical study
The frequency and clinical significance of intra-amniotic inflammation in patients with painless cervical dilatation
Magnetic stimulation of motor cortex and motor roots for painless evaluation of central and proximal peripheral motor pathways. Norm...