Quality control of color picture tubes may require the salvage and reuse of the glass envelopes.

彩色显像管的质量控制需要利用和回用玻璃泡废料。

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The corrosion can be controlled by selecting proper material for transitional section reformer tubes and strict control of reformer operating parameters.

控制原料气中氯离子含量，选择适宜的过渡段炉管材质以及严格控制转化炉运行参数，可使腐蚀得到控制。

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The control pressure is displayed by the luminous digital tubes indirectly.

控制压力由发光数码管间接显示。

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Even so, the students given the marked chips ate 20 and 24 chips on average (for the seven-chip and 14-chip tubes, respectively), compared with 45 chips in the control group.

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These, he says, are 1, 500 times better than existing sensors at detecting hydrogen. (The gas combines with the tubes, changing their electrical properties.) Hydrogen detection is used to help control certain processes in industrial food production, for tweaking fuel combustion in car engines, and in monitoring certain bacterial infections.

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In that study, the students whose tubes had markers after every 5 chips ate 14 chips, and those given tubes with markers every 10 chips ate 16 chips compared with 35 chips in the control group.

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