the diameter of a tree trunk

A paraboloid grid shell with a diameter of 40 m is used for the parameter study.

索撑网壳是一种新型的空间结构形式,主要应用于大跨度玻璃采光顶结构中.

The machines, each of which is perhaps five feet in diameter, are not the largest devices in the room.

这些机器每台直径大约5英尺，它们并不是这间屋里最大的设备。

The length of the flagella is about 1.5 times as the cell diameter.

两条鞭毛稍不等长,着生于细胞前端,鞭毛长约为细胞直径的1.倍.

Screw of big length to diameter ratio, uniform plasticization and high plasticizing capability.

大长径比螺杆 、 塑化均匀、塑化能力特高.

Only l .22 meters in diameter.

直径只有1.22米.

Large diameter drilling piles have been extensively used in foundation engineering.

大直径钻孔灌注桩在基础工程中的应用非常广泛.

The scientists track the speed of growth through tree diameter.

科学家们通过树木的直径来描绘它们的生长速度.

Because the spacesuit protection only 1 mm in diameter, about the impact of space debris.

因为航天服只能防护直径在1毫米左右的空间碎片撞击.

Spring lock washer with adjustable inside and outside diameters.

内径和外径都可调整的弹簧锁垫圈.

The focal spot diameters are hardly changed in communication wavelength band . 2.

焦距相同,光波长不同时,对于目前通常选用的通信用波段,聚焦后焦斑直径基本不变.

The bridge is two leg diameters high and is not self-heating.

这种连桥有两段直径长度那么高,并且不会自行发热.

This is in good agreement with atomic diameters as estimated by other methods.

它与用其他方法估计出来的原子直径非常符合.

The diameters of stars, unlike their masses, have an enormous range.

恒星的直径不同于它们的质量, 相差很大.

The light microscope magnifies the object 1000 diameters.

这架光学显微镜把物像放大一千倍.

The microscope magnifies the object 100 diameters.

显微镜把物像放大了一百倍.

This microscope magnifies 40 diameters.

这台显微镜能放大40倍.

The diameters of the rotor and the stator are limited by mechanical stresses.

转子和定子的直径受到机械强度的限制.

This glass magnifies 20 diameters.

这个放大镜能放大二十倍.

Any two diameters of a circle intersect each other.

圆周内两直径必相交.

Three diameters of straight pipe are required on the valve outlet.

阀门出口处需要配置三倍直径长度的直线管路.