The advantages of PND are cheap and mobile.

便携式导航的优点是价格较低、便于携带。

Gender differences were greatest in women who had no PND.

未患PND的女性中性别差异最大。

In recent years PND has experienced a rapid growth in aftermarket particularly in Europe.

近几年来，便携式导航在汽车后市场的增长很快，尤其是在欧洲。

South America white shrimp: Raw PND shrimp, PND tail-on shrimp, butterfly shrimp and so on.

南美白对虾系列：生虾仁、凤尾虾、蝴蝶虾、无头虾及裹粉系列。

Also included is brief information on manufacturers of PND, HND, and GPS-enabled handheld devices.

它还包括PND, HND和集成gps功能的手持设备的主要制造商信息。

The simulation results show that PND and PNN can reflect the situation of flooded layer in many conditions.

模拟研究结果表明，在大多数情况下，PND和PNN测井能较好的反映地层的水淹情况。

It found that 17% of mothers who had a multiple birth experienced PND, compared with an average of 10% among all mothers.

这个调查显示：所有的母亲中患产后抑郁症的平均几率是10%，但是生过多胞胎的母亲却高达17%。

Therefore we predict that the market for PND and in-car navigation will grow in parallel to meet different customer needs.

我们预计车载导航和便携式导航将会同步增长以满足不同的需求。

The survey found that mothers who suffered PND reported less sleep and less help from family and friends than non-sufferers.

这个调查显示，据患产后抑郁症的母亲自己宣称，和没有患产后抑郁症的母亲相比，她们睡眠比较少，而且得到的家庭和朋友的帮助较少。

Florence, Italy: British researchers have discovered a way of identifying which women are most at risk of postnatal depression (PND).

在意大利佛罗伦萨，英国研究人员已经发现了一种方法来识别哪些妇女患产后抑郁症的风险最高。

Previous studies have shown that women who live in cultures where greater value is placed on sons are more likely to suffer from PND if they give birth to a girl.

以前的研究表明，生活在重男轻女文化背景下的妇女如果生了一个女孩，则更易遭受PND的痛苦。

According to the Royal College of Psychiatrists, about one in 10 new mothers develop PND, which can include feelings of helplessness or being over-anxious about the baby.

根据皇家精神病学院的分析显示：大约十个刚生过小孩的母亲中就有一个患有产后抑郁症。

Some harmed themselves and others contemplated suicide. The survey found that mothers who suffered PND reported less sleep and less help from family and friends than non-sufferers.

这个调查显示，据患产后抑郁症的母亲自己宣称，和没有患产后抑郁症的母亲相比，她们睡眠比较少，而且得到的家庭和朋友的帮助较少。

The method for recognizing gas zone with PND logging data is introduced, which is to overlap the counting rates of a near detector and a far one to recognize gas zone based on certain scale.

介绍了利用PND测井资料进行气层识别的方法，即利用近探测器计数率和远探测器计数率以一定比例进行重叠的方法识别气层。