O. D.
英
美
网络 外径; 光密度; 密度值
双语例句
- We can send it C. O. D. or you can pay by credit card.
我们可以用货到付款的方式寄，你也可以用信用卡付钱。 - Should I enclose payment, ask to be billed, or request that the item be sent C. O. D. ( cash on delivery)?
我要附寄货款，还是要求寄账单付款，或者请求订体货货到付现？ - I'm paying little extra to have them sent C. O. D. I scarce knew in what manner to receive them.
我要多付一点，让他们用付到付款的方式寄。我简直不知道怎样来对付他们。 - The analytic solution of O. D. e with periodic discontinuous coefficients
具有周期性间断系数的常微分方程解析解 - N-body problem is a system of O. D. E.
N-体问题实际上是一个常微分方程组，它描绘了N个天体的运动规律。 - Also two types of triangular generalized conforming element of thin plate are developed, TGC-9 ( 9 d. o. f.) and TGC-9-1 ( nine external d. o. f. and one internal d. o. f.)
推导了两种三角形薄板广义协调元：TGC-9（九个自由度）和TGC-9-1（九个外部自由度和一个内部自由度）。 - Portable steel tube O. D. measuring equipment
手提式钢管外径检测装置 - Briefly described here is the application of rotary coder to O. D. 100 mm plug pipe mill.
简介了旋转编码器在Φ100mm自动轧管机组中的应用情况。 - The paper describes the O. D. and wall-thickness tolerances and internal/ external surface quality of midium and heavy wall steel pipes produced in Hengyang Steel Pipe Factory by means of φ 108mm three-roll mill complete with a 12-stand slight-stretch reducing mill.
介绍了衡阳钢管厂φ108mm三辊轧管机组配置12架微张力减径机生产中厚壁钢管的外径精度、壁厚精度及内外表面质量情况。 - D, of the patients to serum ( or cerebrospinal fluid) O. D.
D值与平均正常人血清（或对照组脑脊液）O。