用户可能为了多个目标使用“how - to”，比如设置Web身份验证、从web应用程序中读数据库等。
A user might have several goals that would benefit from a how-to: for instance, setting up Web authentication, reading a database from a Web application, and so on.
由于错误的读数有时候看起来可能很好、很稳定，所以在测试设置中发现劣等的绝缘情况有时是很困难的。
Detecting inferior insulation in test setups is difficult because the erroneous reading can appear well-behaved and steady.
但是最大的问题是他们设置的角度，一些小的角度及方向的误差可以导致很多不正确的读数。
But the biggest problem was the Angle that they were set at, a small deviation in the azimuth and direction created a variety of incorrect readings.
在获取流量测量读数之前，将阀门设置在全开(4.0)或在一个预调的位置。
Before taking a flow measurement reading, set the valve to its fully open (4.0) or at a preset position.
中的空格，允许之间往往矛盾的轴向和层次设置多个读数。
The Spaces in-between often allow for multiple readings contradicting the axial and hierarchical set up.
在获得初始压差读数后，参阅根据压差和阀门设置而得的流量表。
After initial pressure differential reading is taken, refer to flow rate charts to obtain flow rate based on pressure differential and valve setting.
在获得初始压差读数后，参阅根据压差和阀门设置而得的流量表。
After initial pressure differential reading is taken, refer to flow rate charts to obtain flow rate based on pressure differential and valve setting.
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