ABSTRACT Heart sound is one of the most important physiological signal in human body, the history of cardiac auscultation is more than 180 years.

心音是人体最重要的生理信号之一，心音听诊的历史已有180多年。

youdao

The single, unified programming model and abstract XML description of all EJBs (local or remote) is at the heart of the EJB 2.0 specification.

所有 EJB（本地或者远程）的单一、统一的编程模型和抽象 XML 描述是 EJB 2.0 规范的核心。

youdao

The key to Joda's internals — and at the heart of its design — is the chronology (the notion of which is captured by an abstract class of the same name).

Joda 本质 — 以及其设计核心 — 的关键就是年表（它的含义由一个同名抽象类捕捉）。

youdao

At the heart of "Encounters" are the unprecedented abstract paintings and films each of them made in the early 1920s.

WSJ: Avant-Garde Film's Godfather | Hans Richter | Los Angeles County Museum of Art | Richard B. Woodward

The abstract notes that one of the deaths was due to acute heart failure at the 10mg dose.

FORBES: Pfizer's Key Drug Walks A Tightrope