查询词典 alternating function

We all know that the normal human daily cycle of activity is of 7-8 hours' sleep alternating with some 16-17 hours wakefulness.

农业的发展以及食物与人口的平衡是中国的基本经济问题。

Leb regarding the treatment of osteoporosis with electromagnetic field were built on the clinical studies of Basset, Brighton, Becker, Cruess, Janssen, Lengel, Rubin and Wallach, among which the cell cultivation study made by Rodermann, Bayreuther and Pfederer in 1985,that is the reaction of human skin and pulmonary collagen cells to certain electromagnetic field intensity and alternating density, exerted the biggest influence on Professor W.

Leb教授运用电磁场治疗骨质疏松的治疗计划与规则是建立在Basset，Brighton，Becker， Cruess， Janssen， Lengel， Rubin∫ Wallach 的临床研究基础之上的，其中 Rodemann， Bayreuther和Pfecderer于1985年开展的细胞培养研究，即人类皮肤、肺成胶原细胞对一定电磁场强度和交变密度的反应对W。

A new wavemeter with cathode-ray for decimeter and centimeter waves is proposed, utilizing special deflections of cathode ray in a rapidly alternating field. When the wavelength of the deflecting field is short enough, the deflections can be made to have maximum and zero sensitivities or phase-shifts by adjusting the anode voltage.

著者新拟一量数分米或数厘米电波之波长计其法用阴极射线在极短波长之电场内之特殊偏侧在相当情形下，可由调节其阳极之电压，而使其偏侧之灵敏度或相差成极大或成零。

The Westing House company, who believed Alternating Current was the only current that could be used, a thought directly against Edison's, threw their hat into the electric chair "experiment".

Westing House 公司认为交流电是最好的方法，而托马斯。

If you cannot find stainless steel pipe combinations that yield the 1-5mm gap, you can always regress back to alternating plates of +/- electrodes.

如果您无法找到不锈钢管组合产量1 5毫米的差距，您可以随时倒退回交替板+/-电极。

A stitch similar to a zig-zag stitch except that the alternating stitches are parallel to each other to form a Z.

与人字针相似的一种针，不同之处在它的交替针是彼此平行的，这样可以形成"Z"。

9Bourdon- A stitch similar to a zig-zag stitch except that the alternating stitches are parallel to each other to form.

与人字针相似的一种针，不同之处在它的交替针是彼此平行的，这样可以形成"Z"。

Sepals imbricate or valvate, rarely spathaceous, mostly (2 or)3-6, rarely more, usually free or connate at base only, sometimes partly united into a tube, caducous or persistent, rarely accrescent. Petals 3-8, rarely more, often isomerous and alternating with sepals, free, imbricate or valvate, rarely contorted, similar to sepals or not, sometimes with a fleshy adaxial basal scale, or petals absent. Disk present, entire, lobed, or comprised of free or connate disk glands, these extrastaminal, interstaminal, or intrastaminal, or extragynoecial, or disk absent.

萼片覆瓦状或镊合状排列，很少佛焰苞，几乎(2或者)3-6，很少更多，通常离生或者只是基部合生，花瓣3-8，很少更多，通常与萼片同质并且互生，分离，覆瓦状或镊合状排列，很少旋转状，与萼片相似或不相似，有时在近轴基部有一个肉质的鳞片，或花瓣无。

Seed dormancy of M. adenophora was broken by stratifying seeds at alternating temperatures of 30/20℃, 30/15℃, or at a constant temperature of 25℃ for 2mo followed by 5℃ for 3mo, and resulted in rapid germination.

恒春杨梅种子经2个月30/20℃、30/15℃变温层积，或25℃定温层积，接著3涸月5℃低温层积，皆能打破种子的休眠，使种子迅速发芽。

The bankfull cross-section area of the lower Yellow River experienced four alternating periods with expansion and shrinkage from 1960 to 1997,i.e.1960-1964 expansion,1965-1973 shrinkage,1974-1985 expansion and 1986-1997 shrinkage.

黄河下游河道萎缩有多方面的表现，如过流能力降低、同流量水位抬升、畸形河湾发育、河宽变窄、平滩水位下断面面积减小等。

Pachomius manual labour was organized as an essential part of the monastic life; and since it is a principle of the monks as distinguished from the mendicants, that the body shall be self-supporting, external work of one sort or another has been an inevitable part of the life ever since.

根据圣pachomius体力劳动组织作为一个重要组成部分寺院生活；以来，这是一个原则的和尚，作为有别于乞丐，该机构应自支撑，对外工作的这种或那种已一个必然的一部分，生活至今。

In order to study the effects of parametrical rolling on the ship movement and tilts, in allusion to ship's navigating in regular following waves, the equation of ship rolling motion is transformed into normal Mathieu equation by proper variable replacement when strong parametrical excitation in restoring moment varied according to sine or cosine wave.

为研究参数横摇对船舶运动和倾覆的影响，通过对船在规则波上随浪航行时，恢复力矩中出现的1个以正余弦规律变化的强参数激励项进行适当的变量置换，将船舶的横摇运动方程转换成标准形式的Mathieu方程。