Normally, coefficient of convective heat transfer is gotten through experiments which is heating testing tube by electricity and computed through Newton cooling law.

通常，对流换热系数是在实验中以电加热试验管壁面后根据牛顿冷却定律计算得来的。

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The epidural space puncture testing tube is characterized by being similar to the common syringe in structure and comprising a syringe tube, a piston, a gasket, a spring and a hand-held handle.

其特征是其结构与普通注射器相似，包括：注射器管、活塞、衬垫、弹簧、手持柄。

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I plan to build a plywood triangle version similar to the plywood bike for testing "seat-head" tube angles and wheel base changes.

我计划建立一个胶合板三角版本类似胶合板自行车测试“座头”管角度和车轮的变化。

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It took another three years to figure out a way to grow the virus in a test tube, a requirement for testing an antiviral.

FORBES: Viral Vertigo

HGS, gets human antibodies out of the mice and, if these prove useful in a test tube, makes human monoclonals directly from XenoMouse for further testing as potential drugs.

ECONOMIST: Monoclonal antibodies

BioMedicines of Emeryville, Calif. is testing its Omega interferon with a Duros pump, a titanium device that looks like the ink tube of a Bic pen.

FORBES: The Next HIV?