我们似乎没有看到数量正确的支持电话系统运行的说明书。
It seems we haven't seen the right quantity of manuals to support the telephone system.
为了正确使用该电源并防患于未然，请仔细阅读本说明书，并妥善保管以备查阅。
In order to correctly use the power and nip in the bud, please carefully read the instruction and keep properly to look up.
为确保设备安装正确性，本安全阀安装须由有资格证书的管道承包商或维修技术人员按照说明书及其他相应规定进行。
To ensure proper operation, this valve must be installed by a qualified service technician or licensed plumbing contractor in accordance with these instructions and local plumbing codes and standards.
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