黑龙江省松花江地区泥炭的分布规律和成矿类型

从地貌、水文、气候和地质条件等方面，论述了黑龙江省松花江地区泥炭的分布规律，又 泥炭赋存的微地貌和水分等条件，科学地划分了本地区泥炭的成矿类型。     

RESEARCH AND TECHNICAL NOTES ON THE IMPORTANT ROLE OF CHINESE TONES IN SPEECH INTELLIGIBILITY

The role of Chinese tones played in speech perception were investigated by speech articulationtests in this paper.The first part of these tests was carried out under four different transmission con-ditions.It is shown that the tone articulation is higher than 95% although the syllable articulation ischanged from 77% to 28%,and at the sametime the initial articulation changed from 87.2% to 46.7%and the final articulation changed from 89% to 39.5 %. In order to separate the tones from the spectrum of speech sounds,a 2400 bits/s digital channelvocoder was used in the second part of the articulation tests under four different conditions of ex-citation source:1.a noise source only,2.a triangular pulse train souce with constant fundamentalfrcquency F_0=127 Hz only,3.a triangular pulse train source with normal fundamental frequencyonly and 4.both noise source and pulse source with normal fundamental frequency.It is shown thati.the rank order of the tone articulation for the four testing conditions is 4,3,1,2;ii     

汉语声调在言语可懂度中的重要作用

在四种失真（高、低通滤波并混有非线性失真）条件下,进行言语清晰度试验,证明了失真条件下,声调具有很强的抗干扰能力,声调清晰度几乎不受影响。
采用以下不同的激励源（1.白噪声、2.基频固定的三角波、3.基频随声带基频变化的三角波、4.条件1.加条件3.）产生的合成言语,进行言语清晰度试验,证明:声调信息大大有助于提高言语可懂度,声调信息主要存在于基频随时间的变化中,强度变化对声调信息有补偿作用,以及清辅音的存在与否对声调清晰度是有一定影响的。     

钻井泥浆助剂KHm新工艺

通过试验研究，提出了一种制备钻井泥浆助剂腐植酸钾ＫＨｍ的新工艺，该工艺改变传统方法，采用ＫＯＨ与ＮａＯＨ混合碱液代替ＫＯＨ溶液，并通过改变ＫＯＨ与ＮａＯＨ混合液配比的方法，控制ＫＨｍ中Ｋ＾＋的含量，从而达到降低ＫＨｍ生产成本的目的。