Laboratory glassware; straight bore stopcocks
实验室玻璃器皿；直孔旋塞阀

1977-05-01

Laboratory glassware; offset oblique bore burette stopcocks with tail
实验室玻璃器皿；带尾偏置斜孔滴定管旋塞

1977-05-01

Laboratory glassware; gas sampling tubes with straight bore stopcock and V-bore stopcock
实验室玻璃器皿；带直孔旋塞和V孔旋塞的气体取样管

1977-07-01

실험실용 유리 기구－일반용의 유리제 일방 콕
实验室玻璃器皿通用直孔玻璃旋塞

2006-12-18

실험실용 유리 기구－일반용의 유리제 일방 콕
实验室玻璃器皿通用直孔玻璃旋塞

2006-12-18

Laboratory glassware — Straight-bore glass stopcocks for general purposes
实验室玻璃器皿——通用直孔玻璃旋塞

1997-05-01

Laboratory glassware. Specification for straight-bore glass stopcocks for general purposes
实验室玻璃器皿 通用直孔玻璃旋塞阀规范

1997-08-15

Laboratory glassware; double bore stopcocks with tail
实验室玻璃器皿；带尾双孔旋塞

1977-05-01

Laboratory glassware; gas sampling tubes with V-bore stopcocks
实验室玻璃器皿；带V孔旋塞的气体取样管

1976-04-01

Laboratory ware made from fused quartz and fused silica; straight bore stopcocks made from fused quartz
由熔融石英和熔融石英制成的实验室器皿；由熔融石英制成的直孔旋塞阀

1979-04-01