A method for determining the thermal performance of vacuumcollector tubes with heat pipes is studied in this paper.
本文讨论了热管式真空集热管的热性能测定方法。
2
If this is the case, a simple coaxial vacuum feedthrough can be used to make connections from the collector to the picoammeter.
在这种情况下，可以使用简单的真空同轴接头来进行从收集电极到皮安计的连接。
3
The invention relates to a handle fixing device of vacuum dust-collector which has a handle tube whose length is adjustable and it can slide along the machine.