1.
ellipsoidal head
椭球体的封头, 椭圆封头
2.
unstayed flat heads and covers
无支撑平封头和盖板
3.
DSS tubing joint
双密封专用油管接头
4.
oil-sealed jar safety joint
油封式震击器安全接头
5.
The probe unit is hermetically sealed.
探头装置是密封的。
6.
FLEXIBLE CONDUIT WITH EX(d).PACKING GLAND
防爆密封接头挠性管
7.
EX(d).ARMORED-CABLE PACKING GLAND
防爆铠装电缆密封接头
8.
WATER-PROOF ARMORED-CABLE PACKING GLAND
防水铠装电缆密封接头
9.
EX(d). PACKING GLAND FOR CONNECTING PIPE
接管式防爆密封接头
10.
FLEXIBLE CONDUIT WITH WATER-PROOF PACKING GLAND
防水密封接头挠性管
11.
BALL JOINT SEAL BOOT
球形接头密封防尘套
12.
WATER-PROOF PACKING GLAND FOR CONNECTING PIPE
接管式防水密封接头
13.
She imposed herself as their leader.
她硬要自封为他们的头头。
14.
Through her mind coursed all manner of confused thoughts after she read the letter.
她读完这封信后，千头万绪涌上心头。
15.
Kiln head seal person who adopts clamshell seal, kiln tail equips with the contact-type sealinstallation of the axial, have guaranteed sealed dependability.
窑头密封采用了壳罩式密封，窑尾装有轴向接触式密封装置，保证了密封的可靠性。
16.
I suggest that you tear up the letter and start over again.
我建议你把这封信撕了,再重头开始写。
17.
I nodded dumbly and he slit the envelope.
我默默地点了点头，他就撕开了信封。
18.
Mouths are as muzzled as minds.
学生的嘴巴也像头脑一样被封住了。