对于操作者来说所需的一切就是如何做出适当的吸嗅动作。
All that is required is for the operator to work out how to sniff appropriately.
必须确定这些角色以及每个角色所需的适当资源。
These roles must be identified and proper resources identified to fill each role.
如果适当的话，这可能包括所需服务记录的概述。
This may include an outline of the required service record, if appropriate.
所需要的只是适当的数据而已。
再加热到适当的温度以达到所需的强度和韧性。
And then heat it to appropriate temperature in order to reach necessary intensity and toughness.
为所需的应用申请适当的阀门。
为所需的应用申请适当的阀门。
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