The Haramain Highspeed Railway provides a significant leap forward in the methods of transportation around the Kingdom of Saudi Arabia in terms of providing a safe, convenient and fast methods of traveling linking the two Holy Mosques through Jeddah, King Abdulaziz International Airport and King Abdullah Economic City along the 450 km route.

Ticket issuing, cancellation, and refund conditions: Gregorian’s dates are the official dates used on all issued tickets. Customers are entitled to ask for a full ticket refund only if the trip was canceled by HHR, other options are non-refundable.

Hereditary Hemorrhagic Telangiectasia (HHT), also known as Osler-Weber-Rendu Syndrome, is an inherited disease that leads to malformed blood vessels in multiple organs of the body and typically begins with nosebleeds during childhood. HHT can result in serious health problems if not promptly diagnosed and treated.

Healthy Heart Foundation (HHF)’s work is purpose –driven, with a focus on stopping the world’s number one killer by tirelessly working to prevent and mange heart disease. We make a difference in the fight against heart disease by: Working to improve heart disease prevention, detection, care and support for all people in our communities.

Children traveling in Economy class are entitled to a 50% discount off the base fare. Children traveling in Business class are entitled to a 40% discount off the base fare. Infant occupying a seat and sharing a seat with an adult are entitled to a 90% discount of the base fare. (Only one infant allowed per adult).

As part of the Administration’s overall strategy for restoring stability to housing markets, HHF provides funding for state HFAs to develop locally-tailored foreclosure prevention solutions in areas that have been hard hit by home price declines and high unemployment.

HHF可能是Hospitalized for heart failure的缩写，指因心衰住院，并不是指心衰的一个类型，而是指心衰住院的一个时期。 建议存在心衰的人群及时就诊，由医生判断具体的心衰类型。

2019年8月11日 · 你知道吗，美国的手机信号被留学生们戏称为HHF，即“Hello Hello F-U—C-K”的缩写，可想而知，在美帝手机信号有多么糟。 究其原因，主要是因为美国有非常多的地广人稀地带，包括很多的小城小镇，这些都是网络成本极高的地方，导致运营商的利润率过低而不愿意去做信号覆盖，而运营商更喜欢覆盖人口较多的商业区，相比较于人口较少的高速公路，地下室，甚至偏远郊区等网络信号自然就差。 而本土美国人对于固定电话和语音留言依然非常以来，更重视 …

The objective of Hybrid Hierarchical Runtime (HHRT) library is to extend applications' supportable problem scales. The main targets of HHRT are applications whose problem scales have been limited by the capacity of upper memory layer, such as GPU device memory in GPU clusters.

2022年12月4日 · 近日，北京理工大学的庞思平（点击查看介绍）团队通过筛选不同尺寸的富氮唑类阴离子，在氢键羟胺框架（hhf）中实现了高能富氮阴离子的高效封装。