Fin electric heating tube heater: large thermal inertia, stable heating power, not blocking the air flow channel, wide heating range, long service life.

翅片电热管加热器：热惰性大、加热功率稳定、不堵塞空气流通通道、加温范围宽、使用寿命长。

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Large Ultrasonic Out put power to ensure the sealing quality of various specifications of tube.

超声输出功率强，保证各种材料各种规格软管的封尾质量。

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For solving the problem of small refrigeration power of common pulse tube refrigerators (CPTR), a new concept is put forward of large diameter pulse tube refrigerator (LDPTR).

为了解决普通脉管制冷机的小冷量问题，提出了大口径脉管制冷机的新概念。

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