The competition is stiff.

Your mother is not strict, is she?

Female condoms are also available, most often made of nitrile, latex or polyurethane.

The two components are referred to as a polyurethane system, or simply a system.

Your mother is not strict, is she?

It is not as hard and rigid as bone but is stiffer and less flexible than muscle.

Polyurethane condoms tend to be the same width and thickness as latex condoms, with most polyurethane condoms between 0.04 mm and 0.07 mm thick.

As mentioned above, most condoms are made of latex, but polyurethane and lambskin condoms also exist.

A nation does not have to be cruel to be tough.

Sumo wrestling is a strict hierarchy based on sporting merit.

You mix them together and they make a rigid double helix.

The properties of a polyurethane are greatly influenced by the types of isocyanates and polyols used to make it.

I cannot complain to the teacher. She's very hard.

He was educated by the Jesuits and later attended the University of Ingolstadt.

And then another pair of legs we collaborated on were these look like jellyfish legs, also polyurethane.

Polyurethane (PUR and PU) is a polymer composed of a chain of organic units joined by carbamate (urethane) links.

Male dogs are very serious about a hierarchy, because it prevents physical fights.

In the modern age, condoms are most often made from latex, but some are made from other materials such as polyurethane, polyisoprene, or lamb intestine.

Mo Yan has been forced to live in a highly repressive and rigid political society.

Administrative divisions Rwanda has been governed by a strict hierarchy since precolonial times.

The caudal fin is strongly divided and rigid, with a slender, ridged base.

The wood for the fretboard usually differs from the wood in the rest of the neck.

Life as a wrestler is highly regimented, with rules laid down by the Japan Sumo Association.

So we made what people lovingly referred to as glass legs even though they're actually optically clear polyurethane, a.k.a. bowling ball material.

You can't not know who you are, so you cling to hard matter identity.

They had a stiff tail, like the theropods, to help them balance as they ran on their hind legs.

And I can hold my arm in a particular joint configuration either very stiff or very relaxed.

In the second place, the influence of Comenius was in formulating the general theory of education.

The cell wall is a very tough, flexible and sometimes fairly rigid layer that surrounds some types of cells.

Mechanically, the lithosphere is cooler and more rigid, while the asthenosphere is hotter and flows more easily.

However, polyurethane condoms are less elastic than latex ones, and may be more likely to slip or break than latex, lose their shape or bunch up more than latex, and are more expensive.

Polyurethane condoms in particular, given they are a form of plastic, are not biodegradable, and latex condoms take a very long time to break down.

Language, on the other hand, has an intermediate level of entropy it's neither too rigid, nor is it too random.

Tectonic plates The mechanically rigid outer layer of Earth, the lithosphere, is broken into pieces called tectonic plates.

In popular and folk music, the composer is usually called a songwriter, since the music generally takes the form of a song.

These sub regions are more conceptual than culturally meaningful, and the demarcation of their limits is not rigid.

It is not rigid, since rank is based on varied factors, including occupation, wealth, Islamic virtue, and family ties.

For Callisto, the outer conductive layer corresponds to the cold and rigid lithosphere with a thickness of about 100 km.

And here's the simplest version in nature, and here's my collaborator Ron Fearing's attempt at an artificial version of this dry adhesive made from polyurethane.

An environmental psychologist told me, If you're sitting in a hard chair on a rigid surface, you'll be more rigid.

Rapid economic growth fueled by foreign credits gradually gave way to wrenching austerity and severe political repression, which became increasingly draconian through the 1980s.

Well, the surface of the spray coating is actually filled with nanoparticles that form a very rough and craggly surface.

Much remains to be done, however, and I call on the Commission to be far tougher in exposing the subsidy junkies of Europe.

The subsequent Petroleum Fund Law has very strict and specific wording in relation to what can be withdrawn from the fund.

The rigid separation of Tokugawa society into han, villages, wards, and households helped reaffirm local Shinto attachments.