对于低温的工况介质可选用低温密封系统(J单元)。

For cryogenic applications a low temperature seal system (J unit) is also available.

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可选用红霉素或四环素治疗，但死亡率仍高(占20%)。

Erythromycin or tetracycline are the antibiotics of choice but the mortality remains high (20%).

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针对不同型号的LD和不同芯径的光纤，可选用合适的耦合方式。

For various types of LD and optical fiber, every coupling method has its advantages and disadvantages.

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