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- a helical content α螺旋含量
- Spirillum A helically shaped bacterium. 螺旋菌：一种螺旋形的细菌。
- The SARS viral nucleocapsid is tubular with a helical symmetry. 沙士病毒的核壳呈管形，属螺旋对称型。
- A printer that forms dot matrix characters by means of linear, ridged print hammers that impact paper and ribbon against a helical ridge on a rotating cylinder. 一种采用线性脊纹打印锤的点阵字符打印机，打印时打印锤撞击紧贴在螺旋脊纹旋转圆筒上的纸和色带。
- A helical buckling of pumping rods has taken place in the course of downstroke of pumping. 认为抽油杆在下行冲程中可能因失稳而在有限空间内发生螺旋状弯曲。
- A maxi- mum peak power of 660mW at 260.0nm was obtained with a helical hol- low cathode of 1.2m length, 6mm inner diameter and 9mm coil pitch. 在放电长度1.;2m;内径6mm;螺距9mm的分段放电管中;在波长260nm时获得最大峰值功率660mW。
- A helical gear pressed in No. 3 counterweight drives twin contra-rotating balance shafts in the shaft housing within the lower crankcase . 该锻钢曲轴是完全平衡的8重物和支持的五个主要轴承。
- VCRs use a helical format, known as VHS (Video Home System), consisting of two helical bands and tape 1/2 in. (1 cm) wide. 卡式录影机（VCR）VHS系统是用螺旋模式，有两个螺旋带组成，用的是1/2宽的磁带。
- Bimetal thermometes use a helical coil with fit stem.This requires clearance for a movement of the pointer to indicate the temperature. 把双金属感温元件做成直螺旋圈状，一端焊接在固定点，自由端则随温度变化旋转，带动连杆指针指示温度。
- Zn-O-P- chains.The 2-aminopyridine molecules might impose an extra force to the Zn-O-P chains and thus induce a helical array of the inorganic chains. 此类有机胺分子作为有机配体和结构导向剂, 可能对Zn-O-P强加了额外的作用力, 导致无机链的螺旋排列。
- There is a vein of melancholy in his character. 他的性格中有少许忧郁的气质。
- A printer that forms dot matrix characters by means of linear,ridged print hammers that impact paper and ribbon against a helical ridge on a rotating cylinder. 一种采用线性脊纹打印锤的点阵字符打印机，打印时打印锤撞击紧贴在螺旋脊纹旋转圆筒上的纸和色带。
- There was a long lag in forwarding mail to us. 转寄给我们的邮件晚了很久才拿到。
- A bowl of hot chicken soup is good for you. 喝一碗热鸡汤对你有好处。
- A cloud is a mass of vapor in the sky. 云是天空中的水汽团。
- A country must have the will to repel any invader. 一个国家得有决心击退任何入侵者。
- A fire was burning in the grate. 火在壁炉中燃烧着。
- They cleaved a path through the wilderness. 他们在荒原中开辟出一条路。
- They denounced him to the police as a criminal. 他们向警方告发他是罪犯。
- This place doesn't have a very savory reputation. 这个地方的名声可不太好。
