When you use a null modem to make a direct serial connection between two computers, your cable must be wired, as shown in Listing 1 below.
当您使用零调制解调器电缆在两台计算机之间建立直接串行连接时，您的电缆必须按下面清单1中显示的方式连接。
Supports infrared, direct cable and Bluetooth connection modes.
支持红外，数据线及蓝牙连接模式。
The cable are not for direct connection to a low impedance source, such as the public mains electricity supply.
本电缆不能直接连接到低阻抗电源如公用电网上。
For connection of two sections cable in direct burial, working well or tunnel, the cable metal bushing can be connected directly, and also can be connected across.
用于直埋、工井或隧道内敷设的两段电缆连接，电缆金属护套可直接连接，也可交叉连接。
For situations where Bluetooth is not permitted, you can use the included audio cable for a direct connection - making the MM 550 at home in any situation where a super quality headphone is required.
对于那些蓝牙不允许的情况下，你可以在家里使用直接连接使得MM 550在任何地方一个超级质量要求的情况耳机附带的音频电缆。
For situations where Bluetooth is not permitted, you can use the included audio cable for a direct connection - making the MM 550 at home in any situation where a super quality headphone is required.
对于那些蓝牙不允许的情况下，你可以在家里使用直接连接使得MM 550在任何地方一个超级质量要求的情况耳机附带的音频电缆。
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