Modified Julian Date, MJD, is a modification of the Julian Date that is routinely used by astronomers, geodesists, scientists, financiers, and even some historians. This dating convention, designed to facilitate simplified chronological calculations, numbers all days in consecutive fashion, beginning at a date sufficiently far into the past so ...

简化儒略日（Modified Julian Day，MJD），是将儒略日（Julian Day，JD）进行简化后得到的新计时法。1957年，简化儒略日由史密松天体物理台（Smithsonian Astrophysical Observatory）引入。

Precise conversion between Julian day and UTC. UTC can be converted with milliseconds precision. Julian day can be converted with picoseconds precision.

2025年2月1日 · DAF（Die Attach Film）膜，作为半导体封装工序中的核心材料，扮演着连接半导体芯片与封装基板、芯片与芯片的重要角色。 其超薄型薄膜黏合剂的特性，不仅简化了封装工艺，更提升了产品的可靠性，进而推动了半导体封装向高密度和薄型化的发展。

马查多-约瑟夫病(Machado-Joseph disease，MJD)是以小脑性共济失调、锥体系及锥体外系症状、进行性眼外肌麻痹、远端肌萎缩、面肌搐颤、突眼等为特征的常染色体显性遗传脊髓小脑变性病(SCA-3／MJD)。

Machado-Joseph Disease (MJD), also known as spinocerebellar ataxia type 3 (SCA3), represents the most common form of SCA worldwide. MJD is an autosomal dominant neurodegenerative disorder of late onset, involving predominantly the cerebellar, ...

2019年6月13日 · What’s the right/easy/best way (from Python) to get the MJD for a source catalog for particular visit? TypeError: getDateTime(): incompatible function arguments. The following argument types are supported: 1. (self: lsst.daf.base.propertyContainer.propertyList.PropertyList, name: str) -> lsst.daf.base.dateTime.dateTime.DateTime.

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2025年1月15日 · The entire DAF assessment for the three PC assemblies were conducted before the MJD reached 300 mm with maximum values of 1.57, 1.41, and 1.41 for TSA, STSA, and DSTSA, respectively. Values below 1 were observed at the beginning stage, indicating that with complex joint behaviors under dynamic and static collapse scenarios, the assumption of a ...

MJD32CA - PNP high power bipolar transistor in a power DPAK, TO-252 (SOT428C) Surface-Mounted Device (SMD) plastic package. NPN complement: MJD31CA.