The pressure at which a treatment or test fluid can be injected into the formation matrix without causing a breakdown, or fracture, of the rock matrix.

在不造成岩石破裂或裂缝的情况下可将处理液或测试液注入地层时的压力。

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The present situation of high pinpoint test fluid level in partial decentralized wellhead has been improved, the equipment has been fully applied and the utilization ratio has been i…

改善了部分偏心定点测压井高液面的现状，充分利用和提高设备的利用率，为抽油机井高含水后期的高产液井挖潜治理、保证合理沉没压力下运行提供了新的技术支持。

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Two cerebrospinal fluid specimens have tested positive for Neisseria meningitidis serogroup by latex test.

通过乳胶测试，两个脑脊液标本对脑膜炎奈瑟菌血清群呈阳性反应。

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The ACB said the positive test had been triggered by fluid reduction medication, which Warne claimed was not performance-enhancing.

BBC: Warne out after failed drugs test

Not only does a tiny test tube require far less fluid, it can also speed reactions, because all the molecules are so much closer to each other.

FORBES: A hail of silver bullets

The research could help test simulations of how the outer, fluid core generates the Earth's magnetic field, which shields our planet and the teeming life on it from harmful cosmic rays.

BBC: NEWS | Science/Nature | Earth's core runs ahead of crust