1.
Having no placenta, as marsupials and monotremes.
无胎盘的无胎盘的，如有袋目哺乳动物和单孔目动物
2.
NUMERICAL SIMUL ATION OF THICK WALL HEAD WARM FORMED BY MOULDLESS SPINNING;
厚壁封头无胎温旋压成形的数值模拟
3.
embryonic development of invertebrate
胚胎发育（无脊椎动物）
4.
laser ray nondestructive tire tester
激光轮胎无损检验仪
5.
Tubeless-tire punctures can usually be repaired without taking the tire off the rim.
通常修补无内胎轮胎的破口时,无需将轮胎从轮辋上取下。
6.
"On the tire with an inner tube, the valve is mounted on the tube. On the tubeless tire, the valve is mounted on the wheel rim."
有内胎式轮胎气门是直接做在内胎上的,无内胎式轮胎的气门安装在轮毂上。
7.
"Pneumatic tires are of two types, those using an inner tube and the tubeless type. The amount of air pressure used depends on the type of tire and operation. "
充气轮胎又分为有内胎式和无内胎式两种。轮胎的充气量取决于轮胎的种类和用途。
8.
Induced termination of pregnancy and expulsion of an embryo or fetus that is incapable of survival.
堕胎促使怀孕的停止和无法存活的胚胎或胎儿排出
9.
Air retention test method for tubeless aircraft tyre
GB/T11194-1989航空无内胎轮胎气密性能试验方法
10.
Bead unseating resistance test for tubeless passenger car tyres
GB/T4504-1998轿车无内胎轮胎脱圈阻力试验方法
11.
Achieve of Tyre Burst Early-warning System Wireless Data Transmission
轮胎爆胎预警系统数据无线传输的实现
12.
Design of 550/60-22.5 Ⅰ-3 low profile tubeless agricultural tire
550/60-22.5Ⅰ-3低断面无内胎农业轮胎的设计
13.
Ultrasonic diagnosis of twin reversed arterial perfusion:Case report
双胎合并一胎儿无头、无心复合畸形超声表现1例
14.
It's too bad I wasn't born a boy, but there's no help for that now.
可惜我错投了胎。 那可也无法。
15.
(botany) of or relating to the development of an embryo in the absence of fertilization.
（植物学）胚胎无受精繁殖的。
16.
lifting frame, mobile, not on tyred wheels
移动式吊架,无带轮胎轮子
17.
hat form, of fur felt, neither blocked to shape nor with made brims
绒毛毡帽胎,未制模成形也无特制帽檐
18.
This species did not exhibit parental care behavior.
卵胎生，4~5月产仔，双亲无育幼行为。