The Coptic Church is among the oldest churches of Christianity.科普特教会是最古老的基督教会之一。Jerusalem is Christianity's most venerated place.耶路撒冷被基督徒奉为圣地。He converted to Christianity that day.那天，他皈依了基督教。...
...complex arithmetical formulae.复杂的算术方程式It is useful to have checks against arithmetical errors.为防止算术计算中的错误,加以验算是有益的.But the Chinese were always strong in arithmetical techniques and calculations.但中国人在算术技能和计算方面实力很强.Many...
The stability and space correlation about the sky wave propagation time - delay in Loran - C system are studied.研究了罗兰 -C 天波传播时延的稳定性与空间相关性.The algorithm to judge the peak - value of the Loran - C impulse signal is improve...