1) bibeveled drill
双锋锥
2) This gimlet bores well.
这把锥锋利。
3) Double front structure
双锋结构
4) double-level frontal zones
双层锋区
5) double cold front
双冷锋
1.
The frontogenetical process and development of a double cold front over a mountain are studied by using a semi-geostrophic model.
本文利用半地转模式，讨论了双冷锋的锋生过程及其越过山脉的演变。
6) double cones
双锥
1.
By using the fixed point theorem in double cones,we study the existence of at least two positive solutions for the discrete three-point boundary value problem(BVP)Δ~2y(k-1)+a(k)f(k,y(k))=0,k∈N={1,2,…,T},Δy(0)=0,y(T+1)=βy(l),where f is allowed to change sign,l∈N_1=｛2,3,…,T-1｝,T∈｛3,4,…｝.
应用双锥上的不动点定理,得到了至少存在两个正解的充分条件,并给出了上述边值问题的Green函数。
补充资料：2,2-双氯甲基-三亚甲基-双[双(2-氯乙基)磷酸脂]
CAS：38051-10-4
分子式：C13H24Cl6O8P2
中文名称：2,2-双氯甲基-三亚甲基-双[双(2-氯乙基)磷酸脂]
英文名称：2,2- bis(chloromethyl)-trimethylene bis[bis(2-chloroethyl)phosphate]
phosphoric acid, 2,2-bis(chloromethyl)-1,3-propanediyl tetrakis(2-chloroethyl)
2,2-bis(chloromethyl)trimethylene bis(bis(2-chloroethyl)phosphate)
2,2-bis(chloromethyl)-1,3-propanediyltetrakis(2-chloroethyl)phosphate
分子式：C13H24Cl6O8P2
中文名称：2,2-双氯甲基-三亚甲基-双[双(2-氯乙基)磷酸脂]
英文名称：2,2- bis(chloromethyl)-trimethylene bis[bis(2-chloroethyl)phosphate]
phosphoric acid, 2,2-bis(chloromethyl)-1,3-propanediyl tetrakis(2-chloroethyl)
2,2-bis(chloromethyl)trimethylene bis(bis(2-chloroethyl)phosphate)
2,2-bis(chloromethyl)-1,3-propanediyltetrakis(2-chloroethyl)phosphate
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条