Black Mild Steel Carriage Bolt And Nut  黑铁马车螺丝闩

Black Mild Steel Fish Bolt And Nut  黑铁鱼尾螺丝闩

Black boned chicken with black feather  黑凤鸡

BLACK OVER BLACK  黑染黑

Black-Scholes Option Pricing Model Black-Scholes  期权定价模型

call white black、 swear black is white  无线个人局域网(WPAN); 无线个域网(WPAN); 颠倒黑白、颠倒是非、混淆是非

infra-black region (blacker than black region)  超黑区

spring black stem of black stem of the alfalfa  苜蓿茎炫f菌

effective diameter of bolt or high-strength bolt  螺栓

Fastening Bolt， Binding Bolt  紧固螺栓

reamer bolt [= rimer bolt]  绞孔螺栓; 打入螺栓

taper bolt [= tapered bolt]  锥形螺栓; 推拔螺栓

black whistle behavior  脂肪酸

(BPG)black positive gel  黑色正电胶

‘black soil type’ degraded grassland  黑土型退化草地

’black soil beach’degraded meadow  黑土滩退化草地

’Black soil patch’ degraded meadow  黑土滩退化草地

’Black Soil Type’ degraded grasslands  黑土型退化草地

“Black soil type” deteriorated grassland  黑土型退化草地