And the negative pressure wave signals are multi-resolution analyzed to obtain its low-frequency profile and high-frequency details.
利用小波变换的快速算法(Mallat算法)对泄漏负压波信号进行了多分辨率分析,同时得到了其低频概貌和高频细节。
参考来源 - 输油管道泄漏实时监测报警系统的研究与开发The gas extraction effects is related to negative pressure of suction.
顶板瓦斯高抽巷的抽采效果与抽放负压直接相关。
参考来源 - 顶板瓦斯高抽巷合理抽放负压数值模拟研究·2,447,543篇论文数据,部分数据来源于NoteExpress
When water is pumped out of a chamber below the plate creating negative pressure, the stretchable sensors are pulled down, producing a concave shape.
当水从板下的一个腔中被抽出来产生负压时,可伸缩的传感器被向下拉,形成一个凹形。
Negative pressure doesn't make any sense, right?
负的压强没有意义?
Theeggs were then subjected to the negative pressure/imaging system and regraded.
这些鸡蛋然后经过负压/成像系统处理,重新评定。
As an example,he says Soviet war veterans exert political pressure against negative portrayals of events they participated in and that the Kremlin has its own interest in creating the historical truth commission.
VOA: standard.2009.12.25
Negative pressure doesn't make any sense, right?
负的压强没有意义?
So if delta v is negative, in this case delta v is negative, OK, delta v is negative, pressure is a positive number, negative times negative is positive, work is greater than zero.
也就是当活塞,压缩气体的时候,做的功是正的,按照这一规定,我们需要在这里,加上一个负号,这是习惯规定。
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