四

After the coefficients are quantized by a four-dimensional quantization matrix, most of them equal 0, and thus many zero planes appear in the submatrix.

用四维量化矩阵对变换后的四维子矩阵系数进行量化，量化后四维子矩阵中的变换系数大部分变成了零，这样就会在子矩阵中出现大量的零平面。

The tautomerization and decomposition channels of amino-tetrazoles,mainly 5-amino-tetrzole and 1,5-diamino-tetrzole,were reviewed.

对氨基四唑的多种分解和异构途径进行了综述，主要介绍了5-氨基四唑和1，5-二氨基四唑异构和分解的国内外研究现状。

Four letters (in English notation 'a','g','f' and 'c') indicated a series of four succeeding tones with the range of a tetrachord .

四个字母符号（英文'一'，'g的，'f'和'c'的）表示的一系列成功的四个声调范围与四度音阶。

Compared to prior art, the method effectively resolves disadvantage that polymer, which is generated by tetracarbon octafluoride, on side wall of the welding pad is more and not easy to be cleaned, reduces polymer generation on side wall of the welding pad by reducing concentration of the tetracarbon octafluoride and correspondingly adding carbon tetrafluoride.

与现有技术相比，本发明有效解决了由于八氟化四碳产生的聚合物较多而造成焊垫侧壁的聚合物不易被清洗的缺点，在不影响刻蚀效果的前提下适量降低八氟化四碳的浓度，而对应加入四氟化碳，有效减少在焊垫侧壁生成的聚合物，该聚合物更容易在后续清洗制程中清洗干净。

These compounds have particularly simple structures.1,3 The unit cell is primitive cubic, with metal ions at the cor- ners and the center, bridged by four cyanide anions to form an interpenetrating network of tetrahedrally connected tetra- hedra.

这些化合物有特别简单structures.1 3 晶胞是原始立方，与金属离子在心病净入学率和中心，桥由四氰化阴离子形成互穿网络连接四分四hedra 。

With the stable genetic tetraploidy and the fertility in the nature environments, this allotetraploid population presented the key factors to form a new species with 200 chromosomes.

异源四倍体鲫鲤稳定的染色体数目和正常的性腺结构以及自然条件下的生殖传代行为，说明该异源四倍体鲫鲤已成为一个染色体数目为4n=200、遗传性状稳定的新型四倍体鱼群体，具备形成新种所需的关键因素。

With the stble genetic tetraploidy and the fertility in the nature environments, this allotetraploid population presented the key factors to form a new species with 200 chromosomes.

异源四倍体鲫鲤稳定的染色体数目和正常的性腺结构以及自然条件下的生殖传代行为，说明该异源四倍体鲫鲤已成为一个染色体数目为4n=200、遗传性状稳定的新型四倍体鱼群体，具备形成新种所需的关键因素。

The CD includes four quarterly newsletter, you may be continuous four months of the current events may also be a year in spring, summer, autumn and winter version of the four quarters.

季度CD包括了四份时事通讯，可能是连续四个月的时事也可能是一年中春、夏、秋、冬四个季度的版本。

It is the effigies authority that was suspected of encroaching the 4 people such as bell young lady and reputation authority above all,"Take them the photo of 4 people is on the net everywhere tousle, and return hair post to say 4 people ask for one husband in all, buckle the bad behavior that gets on this kind to turn over a tradition to them, if such behavior is belonged to solid, it is to break the law for certain."

首先是涉嫌侵犯了钟小姐等四人的肖像权和名誉权，"拿她们四人的相片在网上到处乱发，而且还发帖说四人共征一夫，给她们扣上这种反传统的不良行为，这样的行为如属实，肯定是违法。"

Furthermore, the structure of drift trammel net, set longline of baited hooks and jig and their fishing methods were described.(2)The fishing gears in Hejiang section were divided into drift trammel net, set longline and jig according to the fishery status in Hejiang section."Number of fishing boat day" was selected as the unit of fishing effort.

2根据合江江段的渔业现状，将该江段的渔具分为三层流刺网、饵钓、滚钩和其它偶见渔具四类，以"船·天"作为捕捞努力量的单位，用单位捕捞努力量渔获量乘以年捕捞努力量分别得到这四类渔具的年渔获量，并将这四类渔具的年渔获量相加估算出合江江段1999-2002年的渔获量分别为104563.464kg、65564.231kg、123684.966kg和107285.272kg。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。