During oil recovery by rod pump, owing to the elastic stretching and shrinking of the tubing string, the stroke loss of the subsurface pump reaches 10%.

在有杆泵抽油过程中，因油管弹性伸缩，抽油泵冲程损失达10%以上。

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General stroke symptoms can include numbness or weakness on one side of the body, loss of speech, imbalance, trouble with speaking or speech loss, or a sudden, severe headache.

通常，一侧肢体麻痹或者无力，丧失语言功能，失去平衡，言语困难或失语，抑或突发性剧烈头痛都可能是中风的症状。

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The research could also shed light on the memory loss seen in Alzheimer's disease, stroke and other conditions.

这项研究也可以使我们弄清楚在老年痴呆症、中风以及其他疾病中所常见的丧失记忆的原因。

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Other major causes were stroke, loss of use of arms or legs,arthritis, depression,eyesight problems and gastrointestinal problems.

VOA: special.2009.12.28

A stroke is a loss of blood flow in the brain.

VOA: special.2009.09.22

In the other studies, there was no evidence of adverse effects on kidney and liver function, no reports of light-headedness or loss of consciousness, no evidence of fluid or electrolyte loss that might contribute to heat stroke.

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Signs of a stroke include dizziness, sudden weakness or numbness, loss of speech or trouble talking, severe headaches and a reduction or loss of vision.

CNN: Study: Low cholesterol is not enough to prevent stroke

Princess Margaret is said to be experiencing a "severe loss" of appetite, following her recovery from a suspected second stroke just before Christmas.

BBC: 'Frail' Margaret stays in hospital